Bug 723064 - Many debug xpcshell-tests show leaks of 1 each of Mutex, ReentrantMonitor, nsTArray_base, nsThread, nsTimerImpl, r=mccr8

--HG--
extra : rebase_source : 7ec508569cf5a64cea12fb5f085f4feb1f9234bd

dom/base/nsJSEnvironment.cpp

@@ -3495,7 +3495,7 @@ nsJSContext::PokeShrinkGCBuffers()
 void
 nsJSContext::MaybePokeCC()
 {
-  if (sCCTimer) {
+  if (sCCTimer || sDidShutdown) {
     return;
   }