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--- a/Allura/allura/controllers/repository.py
+++ b/Allura/allura/controllers/repository.py
@@ -557,12 +557,10 @@
         for mime in not_binary_mime:
             if mime in utils.guess_mime_type(filename):
                 diff = ''.join(difflib.unified_diff(
-                        la, lb,
-                        ('a' + apath).encode('utf-8'),
-                        ('b' + b.path()).encode('utf-8')))
-
-
-            
+                       la, lb,
+                       ('a' + apath).encode('utf-8'),
+                       ('b' + b.path()).encode('utf-8')))
+
         return dict(
             a=a, b=b,
             diff=diff)