From 6d60befc70eef3e3e3bf699e8d4e22d5c67cad0c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Sat, 15 Mar 2014 18:59:33 +0530
Subject: [PATCH] Edit book: Fix check book failling in the presence of empty
 <style/> tags. Fixes #1292841 [Edit book / check crashes on empty inline
 style tag](https://bugs.launchpad.net/calibre/+bug/1292841)

---
 src/calibre/ebooks/oeb/polish/check/main.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/ebooks/oeb/polish/check/main.py b/src/calibre/ebooks/oeb/polish/check/main.py
index 3f5c2fafad..466e96afd3 100644
--- a/src/calibre/ebooks/oeb/polish/check/main.py
+++ b/src/calibre/ebooks/oeb/polish/check/main.py
@@ -50,7 +50,7 @@ def run_checks(container):
     for name, mt, raw in html_items:
         root = container.parsed(name)
         for style in root.xpath('//*[local-name()="style"]'):
-            if style.get('type', 'text/css') == 'text/css':
+            if style.get('type', 'text/css') == 'text/css' and style.text:
                 errors.extend(check_css_parsing(name, style.text, line_offset=style.sourceline - 1))
         for elem in root.xpath('//*[@style]'):
             raw = elem.get('style')