Dont fail if the workaround for linux brokenness raise an exception

src/calibre/__init__.py

@@ -673,6 +673,10 @@ def fsync(fileobj):
         # To check for the existence of the bug, simply run:
         # python -c "p = '/run/media/kovid/Kindle/driveinfo.calibre'; f = open(p, 'r+b'); os.fsync(f.fileno());"
         # this will cause the Kindle to disconnect.
+        try:
             with open(fileobj.name + '.linux-sucks', 'wb') as f:
                 f.write(b'I cannot believe I need to do this')
             os.remove(f.name)
+        except Exception:
+            import traceback
+            traceback.print_exc()