Add default parameter value for ScopedCallData()

Change-Id: I16b6662a47c682e145d3e2201f9e90f58405a599
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

src/qml/jsruntime/qv4dateobject.cpp

@@ -1311,7 +1311,7 @@ ReturnedValue DatePrototype::method_toJSON(CallContext *ctx)
     if (!toIso)
         return ctx->engine()->throwTypeError();
 
-    ScopedCallData callData(scope, 0);
+    ScopedCallData callData(scope);
     callData->thisObject = ctx->d()->callData->thisObject;
     return toIso->call(callData);
 }

src/qml/jsruntime/qv4functionobject.cpp

@@ -169,7 +169,7 @@ ReturnedValue FunctionObject::name()
 ReturnedValue FunctionObject::newInstance()
 {
     Scope scope(internalClass()->engine);
-    ScopedCallData callData(scope, 0);
+    ScopedCallData callData(scope);
     return construct(callData);
 }
 

src/qml/jsruntime/qv4object.cpp

@@ -89,7 +89,7 @@ ReturnedValue Object::getValue(const ValueRef thisObject, const Property *p, Pro
         return Encode::undefined();
 
     Scope scope(getter->engine());
-    ScopedCallData callData(scope, 0);
+    ScopedCallData callData(scope);
     callData->thisObject = *thisObject;
     return getter->call(callData);
 }

src/qml/jsruntime/qv4objectproto.cpp

@@ -408,7 +408,7 @@ ReturnedValue ObjectPrototype::method_toLocaleString(CallContext *ctx)
     Scoped<FunctionObject> f(scope, o->get(ctx->d()->engine->id_toString));
     if (!f)
         return ctx->engine()->throwTypeError();
-    ScopedCallData callData(scope, 0);
+    ScopedCallData callData(scope);
     callData->thisObject = o;
     return f->call(callData);
 }

src/qml/jsruntime/qv4scopedvalue_p.h

@@ -362,7 +362,7 @@ struct Scoped
 };
 
 struct ScopedCallData {
-    ScopedCallData(Scope &scope, int argc)
+    ScopedCallData(Scope &scope, int argc = 0)
     {
         int size = qMax(argc, (int)QV4::Global::ReservedArgumentCount) + qOffsetOf(QV4::CallData, args)/sizeof(QV4::Value);
         ptr = reinterpret_cast<CallData *>(scope.engine->stackPush(size));

src/qml/jsruntime/qv4script.cpp

@@ -306,7 +306,7 @@ ReturnedValue Script::run()
     } else {
         ScopedObject qmlObj(valueScope, qml.value());
         ScopedFunctionObject f(valueScope, engine->memoryManager->alloc<QmlBindingWrapper>(scope, vmFunction, qmlObj));
-        ScopedCallData callData(valueScope, 0);
+        ScopedCallData callData(valueScope);
         callData->thisObject = Primitive::undefinedValue();
         return f->call(callData);
     }

src/qml/qml/qqmljavascriptexpression.cpp

@@ -110,7 +110,7 @@ QV4::ReturnedValue QQmlJavaScriptExpression::evaluate(QQmlContextData *context,
 {
     QV4::ExecutionEngine *v4 = QV8Engine::getV4(context->engine);
     QV4::Scope scope(v4);
-    QV4::ScopedCallData callData(scope, 0);
+    QV4::ScopedCallData callData(scope);
 
     return evaluate(context, function, callData, isUndefined);
 }

src/qml/qml/qqmlxmlhttprequest.cpp

@@ -1568,7 +1568,7 @@ void QQmlXMLHttpRequest::dispatchCallbackImpl(const ValueRef me)
 
     QQmlContextData *callingContext = QmlContextWrapper::getContext(activationObject);
     if (callingContext) {
-        QV4::ScopedCallData callData(scope, 0);
+        QV4::ScopedCallData callData(scope);
         callData->thisObject = activationObject.asReturnedValue();
         callback->call(callData);
     }