debugger: fix indentation

Change-Id: I361525533adac8866871c4f5463620fc0f55a97c
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

src/plugins/debugger/stackwindow.h

@@ -61,7 +61,7 @@ class StackWindow : public BaseWindow
 public:
     StackWindow() : BaseWindow(new StackTreeView)
     {
-    setWindowTitle(tr("Stack"));
+        setWindowTitle(tr("Stack"));
     }
 };