debugger: apply disassembler/normal view toggling immediately to stack view,

too

src/plugins/debugger/stackhandler.cpp

@@ -89,6 +89,8 @@ StackHandler::StackHandler(QObject *parent)
 {
     m_currentIndex = 0;
     m_canExpand = false;
+    connect(theDebuggerAction(OperateByInstruction), SIGNAL(triggered()),
+        this, SLOT(resetModel()));
 }
 
 int StackHandler::rowCount(const QModelIndex &parent) const

src/plugins/debugger/stackhandler.h

@@ -69,11 +69,12 @@ public:
 
 private:
     // QAbstractTableModel
-    int rowCount(const QModelIndex &parent = QModelIndex()) const;
-    int columnCount(const QModelIndex &parent = QModelIndex()) const;
-    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
+    int rowCount(const QModelIndex &parent) const;
+    int columnCount(const QModelIndex &parent) const;
+    QVariant data(const QModelIndex &index, int role) const;
     QVariant headerData(int section, Qt::Orientation orientation, int role) const;
     Qt::ItemFlags flags(const QModelIndex &index) const;
+    Q_SLOT void resetModel() { reset(); }
 
     QList<StackFrame> m_stackFrames;
     int m_currentIndex;