Bug 537304: fix spurious PASS output in trace-tests console output, r=jorendorff

--HG--
extra : rebase_source : c9fe259a9538c4446e201372b17131c6a6b9b2fd

js/src/tests/jstests.py

@@ -156,7 +156,7 @@ class ResultsSink:
             print 'FAIL' + suffix
 
     def all_passed(self):
-        return not self.groups.get((False, True, False))
+        return 'REGRESSIONS' not in self.groups
 
 def run_tests(tests, results):
     """Run the given tests, sending raw results to the given results accumulator."""