QmlProfiler: fix potential crash

fixes Ib2ea66bd5694046577a0b5a0e2f611f3ffba0238

Change-Id: Ib7a4e02391513984f1c81a43a5fab490b7f88923
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

src/plugins/qmlprofiler/localqmlprofilerrunner.cpp

@@ -41,6 +41,11 @@ LocalQmlProfilerRunner::LocalQmlProfilerRunner(const Configuration &configuratio
             this, SIGNAL(appendMessage(QString,Utils::OutputFormat)));
 }
 
+LocalQmlProfilerRunner::~LocalQmlProfilerRunner()
+{
+    disconnect();
+}
+
 void LocalQmlProfilerRunner::start()
 {
     QString arguments = QString::fromLatin1("-qmljsdebugger=port:%1,block").arg(m_configuration.port);

src/plugins/qmlprofiler/localqmlprofilerrunner.h

@@ -52,6 +52,7 @@ public:
     };
 
     explicit LocalQmlProfilerRunner(const Configuration &configuration, QObject *parent = 0);
+    ~LocalQmlProfilerRunner();
 
     // AbstractQmlProfilerRunner
     virtual void start();

src/plugins/qmlprofiler/qmlprofilerengine.cpp

@@ -61,7 +61,7 @@ class QmlProfilerEngine::QmlProfilerEnginePrivate
 {
 public:
     QmlProfilerEnginePrivate(QmlProfilerEngine *qq) : q(qq), m_runner(0) {}
-    ~QmlProfilerEnginePrivate() { m_runner->disconnect(); delete m_runner; }
+    ~QmlProfilerEnginePrivate() { delete m_runner; }
 
     bool attach(const QString &address, uint port);
     static AbstractQmlProfilerRunner *createRunner(ProjectExplorer::RunConfiguration *runConfiguration,
@@ -153,7 +153,6 @@ bool QmlProfilerEngine::start()
     QTC_ASSERT(d->m_profilerState, return false);
 
     if (d->m_runner) {
-        d->m_runner->disconnect();
         delete d->m_runner;
         d->m_runner = 0;
     }
@@ -365,7 +364,6 @@ void QmlProfilerEngine::profilerStateChanged()
         // (a new one will be created at start)
         d->m_noDebugOutputTimer.stop();
         if (d->m_runner) {
-            d->m_runner->disconnect();
             delete d->m_runner;
             d->m_runner = 0;
         }