codereview: avoid crash if no config
Fixes #959.
R=r
CC=golang-dev
https://golang.org/cl/1876045
diff --git a/lib/codereview/codereview.py b/lib/codereview/codereview.py
index baed951..84fbee6 100644
--- a/lib/codereview/codereview.py
+++ b/lib/codereview/codereview.py
@@ -1632,7 +1632,11 @@
if line.startswith('defaultcc: '):
defaultcc = SplitCommaSpace(line[10:])
except:
- pass
+ # If there are no options, chances are good this is not
+ # a code review repository; stop now before we foul
+ # things up even worse. Might also be that repo doesn't
+ # even have a root. See issue 959.
+ return
try:
f = open(repo.root + '/CONTRIBUTORS', 'r')
