QmlProfiler: Make sure the different models agree on their state

Previously, the QmlProfilerSimpleModel would report a count of 1/1 when
empty while all others report 0/1. This leads to the UI waiting
forever for the "missing" data.

Task-number: QTCREATORBUG-11095
Change-Id: I165278caa5a2bece362bf869608d501d7f553c91
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

src/plugins/qmlprofiler/qmlprofilersimplemodel.cpp

@@ -100,7 +100,7 @@ qint64 QmlProfilerSimpleModel::lastTimeMark() const
 
 void QmlProfilerSimpleModel::complete()
 {
-    m_modelManager->modelProxyCountUpdated(m_modelId, 1, 1);
+    m_modelManager->modelProxyCountUpdated(m_modelId, isEmpty() ? 0 : 1, 1);
     emit changed();
 }