Fix git cl status for MERGED CLs.

TBR=sergiyb@chromium.org
BUG=612414

Review-Url: https://codereview.chromium.org/1980323002

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@300621 0039d316-1c4b-4281-b951-d872f2087c98

git_cl.py

@@ -2138,7 +2138,7 @@ class _GerritChangelistImpl(_ChangelistCodereviewBase):
     except httplib.HTTPException:
       return 'error'
 
-    if data['status'] == 'ABANDONED':
+    if data['status'] in ('ABANDONED', 'MERGED'):
       return 'closed'
 
     cq_label = data['labels'].get('Commit-Queue', {})