Fix PEP8 violations

bin/github-backup

@@ -69,7 +69,8 @@ def mkdir_p(*args):
         except OSError as exc:  # Python >2.5
             if exc.errno == errno.EEXIST and os.path.isdir(path):
                 pass
-            else: raise
+            else:
+                raise
 
 
 def parse_args():