Remove unnecessary assignment.

src/calibre/gui2/store/baen_webscription_plugin.py

@@ -38,7 +38,7 @@ class BaenWebScriptionStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://www.webscription.net/searchadv.aspx?IsSubmit=true&SearchTerm=' + urllib2.quote(query)

src/calibre/gui2/store/bewrite_plugin.py

@@ -38,7 +38,7 @@ class BeWriteStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://www.bewrite.net/mm5/merchant.mvc?Search_Code=B&Screen=SRCH&Search=' + urllib2.quote(query)

src/calibre/gui2/store/bn_plugin.py

@@ -46,7 +46,7 @@ class BNStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_item)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://productsearch.barnesandnoble.com/search/results.aspx?STORE=EBOOK&SZE=%s&WRD=' % max_results

src/calibre/gui2/store/diesel_ebooks_plugin.py

@@ -43,7 +43,7 @@ class DieselEbooksStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://www.diesel-ebooks.com/index.php?page=seek&id[m]=&id[c]=scope%253Dinventory&id[q]=' + urllib2.quote(query)

src/calibre/gui2/store/ebooks_com_plugin.py

@@ -45,7 +45,7 @@ class EbookscomStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://www.ebooks.com/SearchApp/SearchResults.net?term=' + urllib2.quote(query)

src/calibre/gui2/store/eharlequin_plugin.py

@@ -50,7 +50,7 @@ class EHarlequinStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://ebooks.eharlequin.com/BANGSearch.dll?Type=FullText&FullTextField=All&FullTextCriteria=' + urllib2.quote(query)

src/calibre/gui2/store/feedbooks_plugin.py

@@ -38,7 +38,7 @@ class FeedbooksStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://m.feedbooks.com/search?query=' + urllib2.quote(query)

src/calibre/gui2/store/gutenberg_plugin.py

@@ -38,7 +38,7 @@ class GutenbergStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         # Gutenberg's website does not allow searching both author and title.

src/calibre/gui2/store/kobo_plugin.py

@@ -45,7 +45,7 @@ class KoboStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://www.kobobooks.com/search/search.html?q=' + urllib2.quote(query)

src/calibre/gui2/store/manybooks_plugin.py

@@ -37,7 +37,7 @@ class ManyBooksStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         # ManyBooks website separates results for title and author.

src/calibre/gui2/store/open_library_plugin.py

@@ -37,7 +37,7 @@ class OpenLibraryStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://openlibrary.org/search?q=' + urllib2.quote(query) + '&has_fulltext=true'

src/calibre/gui2/store/smashwords_plugin.py

@@ -44,7 +44,7 @@ class SmashwordsStore(BasicStoreConfig, StorePlugin):
             d = WebStoreDialog(self.gui, url, parent, detail_url)
             d.setWindowTitle(self.name)
             d.set_tags(settings.get(self.name + '_tags', ''))
-            d = d.exec_()
+            d.exec_()
 
     def search(self, query, max_results=10, timeout=60):
         url = 'http://www.smashwords.com/books/search?query=' + urllib2.quote(query)