mercurial/revlog.py

--- a/mercurial/revlog.py	Thu Dec 17 17:16:02 2015 -0800
+++ b/mercurial/revlog.py	Fri Dec 18 20:54:41 2015 -0800
@@ -1438,7 +1438,7 @@
         # We work around this issue by inserting a seek() before writing.
         # Note: This is likely not necessary on Python 3.
         ifh.seek(0, os.SEEK_END)
-	 if dfh:
+        if dfh:
             dfh.seek(0, os.SEEK_END)
 
         curr = len(self) - 1