Debugger: Make mixed breakpoints last longer than one run

Task-number: QTCREATORBUG-11184

Change-Id: Iaf3b3e2268cf34185f794997a35b6f0eedcccc6b
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/debugger/lldb/lldbengine.cpp

@@ -156,6 +156,7 @@ void LldbEngine::shutdownEngine()
     m_lldbProc.kill();
     if (startParameters().useTerminal)
         m_stubProc.stop();
+    notifyEngineShutdownOk();
 }
 
 void LldbEngine::abortDebugger()