git_cl.py: In the "status" command, add space after the branch name.

i.e. the output looks like:

   my-branch-name : https://codereview.chromium.org/1234567
  my-other-branch : https://codereview.chromium.org/8675309

This makes it possible to double-click the branch name to use it in a subsequent
command.

BUG=none
R=maruel@chromium.org

Review URL: https://codereview.chromium.org/118613003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@241731 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/git_cl.py b/git_cl.py
index d01c354..da3808a 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -1228,7 +1228,7 @@
     if not sys.stdout.isatty():
       color = ''
       reset = ''
-    print '  %*s: %s%s%s' % (
+    print '  %*s : %s%s%s' % (
           alignment, ShortBranchName(branch), color, issue, reset)
 
   cl = Changelist()