Fix crash in updating linenumbers of Breakpoints

BreakHandler::updateMarker deletes and recreates the marker, so we need
to call the base class before.

Change-Id: Icc7587d0ab3dff280e99a84c9b4bea555c36a875
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/debugger/breakpointmarker.cpp

@@ -67,8 +67,8 @@ void BreakpointMarker::removedFromEditor()
 
 void BreakpointMarker::updateLineNumber(int lineNumber)
 {
-    breakHandler()->updateLineNumberFromMarker(m_id, lineNumber);
     BaseTextMark::updateLineNumber(lineNumber);
+    breakHandler()->updateLineNumberFromMarker(m_id, lineNumber);
 }
 
 } // namespace Internal