Fixed PEP8 violations introduced in my effort to fix PEP8 violations in my last commit.

breedlun · breedlun · commit c9c536ef9e32 · 2015-02-07T10:21:15.000-07:00
diff --git a/lib/matplotlib/backends/backend_pdf.py b/lib/matplotlib/backends/backend_pdf.py
@@ -1458,12 +1458,12 @@ def writeInfoDict(self):
         def is_date(x):
             boolean = isinstance(x, datetime)
             return(boolean)
-            
+        
         def check_trapped(x):
             boolean = isinstance(x, Name) and \
                 x.name in ('True', 'False', 'Unknown')
             return(boolean)
-            
+        
         keywords = {'Title': is_string_like,
                     'Author': is_string_like,
                     'Subject': is_string_like,
