IDL: Fix exception handling when converting V8 value to union/dictionary

Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp

Index: Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
diff --git a/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp b/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
index 6162dff4f20385fec819a44e11e57b4a96817c3b..f5a20be060eff43530f216db2c7f69596e544003 100644
--- a/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
+++ b/Source/bindings/tests/results/core/V8TestInterfaceEventInit.cpp
@@ -35,7 +35,7 @@ void V8TestInterfaceEventInit::toImpl(v8::Isolate* isolate, v8::Local<v8::Value>
     if (stringMemberValue.IsEmpty() || stringMemberValue->IsUndefined()) {
         // Do nothing.
     } else {
-        TOSTRING_VOID(V8StringResource<>, stringMember, stringMemberValue);
+        TOSTRING_VOID_EXCEPTIONSTATE(V8StringResource<>, stringMember, stringMemberValue, exceptionState);
         impl.setStringMember(stringMember);
     }