Fix colorization bug in git_map.

Previously BRIGHT+WHITE would wrap around to the asterisk on the next line.

R=agable@chromium.org
BUG=

Review URL: https://codereview.chromium.org/224933003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@261783 0039d316-1c4b-4281-b951-d872f2087c98

git_map.py

@@ -66,7 +66,7 @@ def main():
           line = line.rstrip(newline)
           line += ''.join(
               (BRIGHT, WHITE, '    <(%s)' % (', '.join(base_for_branches)),
-               newline))
+               RESET, newline))
           for b in base_for_branches:
             del merge_base_map[b]