Bug 982561 - Fix rooting analysis false positive caused by 36eba9f58983 r=me

js/src/jsweakmap.cpp

@@ -165,6 +165,7 @@ ObjectValueMap::findZoneEdges()
      * edge to ensure that the delegate zone does finish marking after the key
      * zone.
      */
+    JS::AutoAssertNoGC nogc;
     Zone *mapZone = compartment->zone();
     for (Range r = all(); !r.empty(); r.popFront()) {
         JSObject *key = r.front().key();