IDL compiler: [RaisesException] for non-void methods

Source/bindings/templates/methods.cpp

 {##############################################################################}
 {% macro generate_method(method, world_suffix) %}
 {% filter conditional(method.conditional_string) %}
 static void {{method.name}}{{method.overload_index}}Method{{world_suffix}}(const v8::FunctionCallbackInfo<v8::Value>& info)
 {
     {% if method.has_exception_state %}
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "{{method.name}}", "{{interface_name}}", info.Holder(), info.GetIsolate());
     {% endif %}
     {% if method.name in ['addEventListener', 'removeEventListener'] %}
     {{add_remove_event_listener_method(method.name) | indent}}
@@ skipping 159 matching lines @@
 ScriptState& state = *currentState;
 {% endif %}
 {% if method.is_call_with_execution_context %}
 ExecutionContext* scriptContext = getExecutionContext();
 {% endif %}
 {% if method.is_call_with_script_arguments %}
 RefPtr<ScriptArguments> scriptArguments(createScriptArguments(info, {{method.number_of_arguments}}));
 {% endif %}
 {% if method.idl_type == 'void' %}
 {{cpp_value}};
-{% elif method.is_call_with_script_state %}
+{% elif method.is_call_with_script_state or method.is_raises_exception %}
 {# FIXME: consider always using a local variable #}
 {{method.cpp_type}} result = {{cpp_value}};
 {% endif %}
 {% if method.is_raises_exception %}
 if (exceptionState.throwIfNeeded())
     return;
 {% endif %}
 {% if method.is_call_with_script_state %}
 if (state.hadException()) {
     v8::Local<v8::Value> exception = state.exception();
@@ skipping 199 matching lines @@
     v8::Handle<v8::Object> wrapper = info.Holder();
     {% if is_constructor_raises_exception %}
     if (exceptionState.throwIfNeeded())
         return;
     {% endif %}
 
     V8DOMWrapper::associateObjectWithWrapper<{{v8_class}}>(impl.release(), &{{v8_class}}Constructor::wrapperTypeInfo, wrapper, info.GetIsolate(), WrapperConfiguration::Dependent);
     v8SetReturnValue(info, wrapper);
 }
 {% endmacro %}