Debugger: Fix memory leak of ModulesModel

Change-Id: I79f13ca747aefbbf6f2b518aa7c14b6082373af1
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/moduleshandler.cpp

@@ -258,6 +258,11 @@ ModulesHandler::ModulesHandler(DebuggerEngine *engine)
     m_proxyModel->setSourceModel(m_model);
 }
 
+ModulesHandler::~ModulesHandler()
+{
+    delete m_model;
+}
+
 QAbstractItemModel *ModulesHandler::model() const
 {
     return m_proxyModel;

src/plugins/debugger/moduleshandler.h

@@ -118,6 +118,7 @@ class ModulesHandler : public QObject
 
 public:
     explicit ModulesHandler(DebuggerEngine *engine);
+    ~ModulesHandler();
 
     QAbstractItemModel *model() const;