misc: QT_VERSION_STR must be defined

Change-Id: I1533ca831cc2cb7f627535d1e9d37549ccaf8b59

src/mainapplication.cpp

@@ -103,7 +103,7 @@ MainApplication::MainApplication(int& argc, char** argv)
     const char* qtVersion = qVersion();
     qInfo() << "Using Qt runtime version:" << qtVersion;
     if (strncmp(qtVersion, QT_VERSION_STR, strnlen(qtVersion, sizeof qtVersion)) != 0) {
-        qFatal(QString("Qt build version mismatch!(%1)").arg(QT_VERSION_STR).toLatin1());
+        qFatal("Qt build version mismatch! %s", QT_VERSION_STR);
     }
 
     parseArguments();