Fix build.

Revert part of 3dac9bd4

.

Change-Id: I2af57e609b0554d1f8f2c361813068a6ca7c14e8
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

src/plugins/debugger/debuggertooltipmanager.cpp

@@ -1232,9 +1232,7 @@ void DebuggerToolTipManager::loadSessionData()
     r.readNextStartElement();
     if (r.tokenType() != QXmlStreamReader::StartElement || r.name() != QLatin1String(sessionDocumentC))
         return;
-    const double version;
-    if (debugToolTips)
-        version = r.attributes().value(QLatin1String(sessionVersionAttributeC)).toString().toDouble();
+    const double version = r.attributes().value(QLatin1String(sessionVersionAttributeC)).toString().toDouble();
     while (!r.atEnd())
         if (DebuggerToolTipWidget *tw = DebuggerToolTipWidget::loadSessionData(r))
             registerToolTip(tw);