QmlProfiler: fixed bug in elapsed display when finishing trace

Change-Id: I85c376b45eb6308c4af4e80032e37379b12ef8e0
Reviewed-on: http://codereview.qt-project.org/6425
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/plugins/qmlprofiler/qml/MainView.qml

@@ -63,11 +63,15 @@ Rectangle {
         hideRangeDetails();
     }
 
-    function clearAll() {
+    function clearDisplay() {
         clearData();
         selectedEventIndex = -1;
         canvas.requestPaint();
         view.visible = false;
+    }
+
+    function clearAll() {
+        clearDisplay();
         root.elapsedTime = 0;
         root.updateTimer();
     }