Debugger: Make second call to abort LLDB more lethal

Change-Id: I66cfb1e01193c57e06aebeaa8defa11809e24c50
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/lldb/lldbengine.h

@@ -100,6 +100,7 @@ private:
     void runEngine();
     void shutdownInferior();
     void shutdownEngine();
+    void abortDebugger();
 
     bool setToolTipExpression(const QPoint &mousePos,
         TextEditor::ITextEditor *editor, const DebuggerToolTipContext &);