Fix automatic tagging.

tools/push-to-trunk/auto_tag.py

 #!/usr/bin/env python
 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import argparse
 import sys
 
 from common_includes import *
 
@@ skipping 99 matching lines @@
   MESSAGE = "Calculate the revision to tag."
 
   def LastLKGR(self, min_rev, max_rev):
     """Finds the newest lkgr between min_rev (inclusive) and max_rev
     (exclusive).
     """
     for lkgr in self["lkgrs"]:
       # LKGRs are reverse sorted.
       if int(min_rev) <= int(lkgr) and int(lkgr) < int(max_rev):
         return lkgr
-      return None
+    return None
 
   def RunStep(self):
     # Get the lkgr after the tag candidate and before the next tag candidate.
     candidate_svn = self.GitSVNFindSVNRev(self["candidate"])
     if self["next"]:
       next_svn = self.GitSVNFindSVNRev(self["next"])
     else:
       # Don't include the version change commit itself if there is no upper
       # limit yet.
       candidate_svn =  str(int(candidate_svn) + 1)
@@ skipping 60 matching lines @@
       GetOldestUntaggedVersion,
       GetLKGRs,
       CalculateTagRevision,
       MakeTag,
       CleanUp,
     ]
 
 
 if __name__ == "__main__":  # pragma: no cover
   sys.exit(AutoTag(CONFIG).Run())