Bug 635227 - crash [@ nsJSContext::CycleCollectNow], r=gal, a=hb

dom/base/nsJSEnvironment.cpp

@@ -3280,8 +3280,10 @@ nsJSContext::GarbageCollectNow()
   sPendingLoadCount = 0;
   sLoadingInProgress = PR_FALSE;
 
+  if (nsContentUtils::XPConnect()) {
     nsContentUtils::XPConnect()->GarbageCollect();
   }
+}
 
 //Static
 void