diff options
| -rw-r--r-- | dom/bindings/DOMJSProxyHandler.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/dom/bindings/DOMJSProxyHandler.cpp b/dom/bindings/DOMJSProxyHandler.cpp index f0ebf4385..e121ff65c 100644 --- a/dom/bindings/DOMJSProxyHandler.cpp +++ b/dom/bindings/DOMJSProxyHandler.cpp @@ -121,6 +121,10 @@ DOMProxyHandler::EnsureExpandoObject(JSContext* cx, JS::Handle<JSObject*> obj) nsISupports* native = UnwrapDOMObject<nsISupports>(obj); nsWrapperCache* cache; CallQueryInterface(native, &cache); + if (!cache) { + return expando; + } + if (expandoAndGeneration) { cache->PreserveWrapper(native); expandoAndGeneration->expando.setObject(*expando); |