Fix the leak of the wrapper created by WrapperClass_Allocate().

Review URL: https://codereview.chromium.org/324033002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@277962 0039d316-1c4b-4281-b951-d872f2087c98

content/renderer/pepper/plugin_object.cc

@@ -43,10 +43,11 @@ NPObject* WrapperClass_Allocate(NPP npp, NPClass* unused) {
 
 void WrapperClass_Deallocate(NPObject* np_object) {
   PluginObject* plugin_object = PluginObject::FromNPObject(np_object);
-  if (!plugin_object)
-    return;
+  if (plugin_object) {
     plugin_object->ppp_class()->Deallocate(plugin_object->ppp_class_data());
     delete plugin_object;
+  }
+  delete np_object;
 }
 
 void WrapperClass_Invalidate(NPObject* object) {}