Fix security warning about passing a variable to printf-formatting.

Change-Id: I7ea8ff54d24fe0818cd216d4aac0e8970461306e
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>

tools/qmlscene/main.cpp

@@ -464,7 +464,7 @@ int main(int argc, char ** argv)
             QObject::connect(&engine, SIGNAL(quit()), QCoreApplication::instance(), SLOT(quit()));
             component->loadUrl(options.file);
             if ( !component->isReady() ) {
-                qFatal(qPrintable(component->errorString()));
+                qFatal("%s", qPrintable(component->errorString()));
                 return -1;
             }