Bug 1451172, fallback to current global in FindAssociatedGlobal when nsIGlobalObject doesn't have JS object anymore, r=bz

--HG--
extra : rebase_source : f5c520bd4019e6a8b940307355c68135e7e0cb9c

dom/bindings/BindingUtils.h

@@ -1721,7 +1721,9 @@ FindAssociatedGlobal(JSContext* cx, nsIGlobalObject* const& p)
 
   JSObject* global = p->GetGlobalJSObject();
   if (!global) {
-    return nullptr;
+    // nsIGlobalObject doesn't have a JS object anymore,
+    // fallback to the current global.
+    return JS::CurrentGlobalOrNull(cx);
   }
 
   MOZ_ASSERT(JS_IsGlobalObject(global));