Bug 543977 - NPClass.invoke should be optional when a class just wants to implement NPClass.invokedefault, r=jst

--HG--
extra : rebase_source : 2e1fb9896bcbf12bc6d2772c02a1cc9557efe6eb

modules/plugin/base/src/nsJSNPRuntime.cpp

@@ -1355,7 +1355,7 @@ CallNPMethodInternal(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
 
   NPObject *npobj = (NPObject *)::JS_GetPrivate(cx, obj);
 
-  if (!npobj || !npobj->_class || !npobj->_class->invoke) {
+  if (!npobj || !npobj->_class) {
     ThrowJSException(cx, "Bad NPObject as private data!");
 
     return JS_FALSE;