Gerrit git cl: fix change-id appending.

git_footers.py

 #!/usr/bin/env python
 # Copyright 2014 The Chromium 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 re
 import sys
 
 from collections import defaultdict
@@ skipping 65 matching lines @@
   assert 0 == len(get_footer_change_id(message))
   change_id_line = 'Change-Id: %s' % change_id
   # This code does the same as parse_footers, but keeps track of line
   # numbers so that ChangeId is inserted in the right place.
   lines = message.splitlines()
   footer_lines = []
   for line in reversed(lines):
     if line == '' or line.isspace():
       break
     footer_lines.append(line)
+  else:
+    # The whole description was consisting of footers,
+    # which means those aren't footers.
+    footer_lines = []
   # footers order is from end to start of the message.
   footers = map(parse_footer, footer_lines)
-  if not all(footers):
+  if not footers or not all(footers):
     lines.append('')
     lines.append(change_id_line)
   else:
     after = set(map(normalize_name, ['Bug', 'Issue', 'Test', 'Feature']))
     for i, (key, _) in enumerate(footers):
       if normalize_name(key) in after:
         insert_at = len(lines) - i
         break
     else:
       insert_at = len(lines) - len(footers)
@@ skipping 94 matching lines @@
         print '%s: %s' % (k, v)
   return 0
 
 
 if __name__ == '__main__':
   try:
     sys.exit(main(sys.argv[1:]))
   except KeyboardInterrupt:
     sys.stderr.write('interrupted\n')
     sys.exit(1)