Properly clear input events model

Change-Id: I17b7e84605f93d421de7dcf0a0b02c6b922b2c4b
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

plugins/qmlprofiler/inputeventsmodel.cpp

@@ -107,6 +107,7 @@ void InputEventsModel::loadData()
 void InputEventsModel::clear()
 {
     m_keyTypeId = m_mouseTypeId = -1;
+    m_data.clear();
     QmlProfilerTimelineModel::clear();
 }