No warning if qmlscene exist on Qt5+

We don't need warning if qmlviewer does not exist on Qt5+
because we can skip qtquick1 module right now.
Change-Id: Idbe8488aad15e518b77c429de6b3bb5134e6ab32
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/qtsupport/baseqtversion.cpp

@@ -721,6 +721,7 @@ QString BaseQtVersion::findQtBinary(Binaries binary) const
         else
             possibleCommands << QLatin1String("qmlscene");
     }
+        break;
     case QmlViewer: {
         if (HostOsInfo::isWindowsHost())
             possibleCommands << QLatin1String("qmlviewer.exe");

src/plugins/qtsupport/desktopqtversion.cpp

@@ -67,10 +67,12 @@ QString DesktopQtVersion::type() const
 QStringList DesktopQtVersion::warningReason() const
 {
     QStringList ret = BaseQtVersion::warningReason();
-    if (qtVersion() >= QtVersionNumber(5, 0, 0) && qmlsceneCommand().isEmpty())
-        ret << QCoreApplication::translate("QtVersion", "No qmlscene installed.");
-    if (qtVersion() >= QtVersionNumber(4, 7, 0) && qmlviewerCommand().isEmpty())
+    if (qtVersion() >= QtVersionNumber(5, 0, 0)) {
+        if (qmlsceneCommand().isEmpty())
+            ret << QCoreApplication::translate("QtVersion", "No qmlscene installed.");
+    } else if (qtVersion() >= QtVersionNumber(4, 7, 0) && qmlviewerCommand().isEmpty()) {
         ret << QCoreApplication::translate("QtVersion", "No qmlviewer installed.");
+    }
     return ret;
 }