Bug 781722 - Loosen over-tight assertion in JS_GetGlobalForScopeChain.

--HG--
extra : rebase_source : eb94fcced7bc3584de4c43ca511d3d7c0ed3dc20

js/src/jsapi.cpp

@@ -2301,7 +2301,7 @@ JS_GetGlobalForCompartmentOrNull(JSContext *cx, JSCompartment *c)
 JS_PUBLIC_API(JSObject *)
 JS_GetGlobalForScopeChain(JSContext *cx)
 {
-    AssertHeapIsIdle(cx);
+    AssertHeapIsIdleOrIterating(cx);
     CHECK_REQUEST(cx);
     return GetGlobalForScopeChain(cx);
 }