IDL compiler: move EventHandler null check out of generated bindings

Source/bindings/v8/V8Utilities.cpp

Index: Source/bindings/v8/V8Utilities.cpp
diff --git a/Source/bindings/v8/V8Utilities.cpp b/Source/bindings/v8/V8Utilities.cpp
index 7d4e64becdf738f6e2ed32f9598ea4f023cbc46a..71d7493b164bbc2aeb7128e7b8b2535ecaa7da6e 100644
--- a/Source/bindings/v8/V8Utilities.cpp
+++ b/Source/bindings/v8/V8Utilities.cpp
@@ -149,6 +149,9 @@ void transferHiddenDependency(v8::Handle<v8::Object> object, EventListener* oldV
                 removeHiddenDependency(object, oldListenerObject, cacheIndex, isolate);
         }
     }
+    // Non-callable input should be treated as null
+    if (!newValue->IsNull() && !newValue->IsFunction())

[Nils Barth (inactive), 2013/10/22 01:46:38]

We can merge these checks, right?
As:
if (!newValue->IsNull() && newValue->IsFunction() && !newValue->IsUndefined())

[haraken, 2013/10/22 02:05:14]

Right.

+        newValue = v8::Null(isolate);
     if (!newValue->IsNull() && !newValue->IsUndefined())
         createHiddenDependency(object, newValue, cacheIndex, isolate);
 }