fix git-cl-try without parameters

git_cl.py

Index: git_cl.py
diff --git a/git_cl.py b/git_cl.py
index 66bb76831aa3c1608b5b06b7585353be41579cb4..9c8c9fa3c20c6acd053f286aa654f12798f2ac57 100755
--- a/git_cl.py
+++ b/git_cl.py
@@ -350,7 +350,7 @@ def _get_bucket_map(changelist, options, option_parser):
     change = changelist.GetChange(
         changelist.GetCommonAncestorWithUpstream(), None)
     # Get try masters from PRESUBMIT.py files.
-    return presubmit_support.DoGetTryMasters(
+    masters = presubmit_support.DoGetTryMasters(
         change=change,
         changed_files=change.LocalPaths(),
         repository_root=settings.GetRoot(),
@@ -358,6 +358,7 @@ def _get_bucket_map(changelist, options, option_parser):
         project=None,
         verbose=options.verbose,
         output_stream=sys.stdout)
+    return {MASTER_PREFIX + m: b for m, b in masters.iteritems()}

[qyearsley, 2016/11/04 22:02:52]

Could be changed to:

return {_prefix_master(m): b for m, b in masters.iteritems()}

[nodir, 2016/11/04 22:04:04]

I don't like _prefix_master. It assumes that no master starts with "master.".
Better not to make assumptions when we know for sure that this is a master name
and not a bucket name.

 
   if options.bucket:
     return {options.bucket: {b: [] for b in options.bot}}