Deskbar: Inital FetchIcon() in AttachedToWindow()

This ensures that we have a connection to App Server at the
time we are fetching the icon.

Hopefully fixes #13172

src/apps/deskbar/BarMenuBar.cpp

@@ -111,7 +111,6 @@ TBarMenuBar::TBarMenuBar(BRect frame, const char* name, TBarView* barView)
 
 	fDeskbarMenuItem = new TDeskbarMenuTitle(frame.Width(), frame.Height(),
 		NULL, beMenu);
-	fDeskbarMenuItem->FetchIcon();
 	AddItem(fDeskbarMenuItem);
 }
 
@@ -121,6 +120,15 @@ TBarMenuBar::~TBarMenuBar()
 }
 
 
+void
+TBarMenuBar::AttachedToWindow()
+{
+	fDeskbarMenuItem->FetchIcon();
+
+	BMenuBar::AttachedToWindow();
+}
+
+
 void
 TBarMenuBar::SmartResize(float width, float height)
 {

src/apps/deskbar/BarMenuBar.h

@@ -62,6 +62,8 @@ public:
 								TBarView* barView);
 	virtual					~TBarMenuBar();
 
+	virtual	void			AttachedToWindow();
+
 	virtual	void			MouseMoved(BPoint where, uint32 code,
 								const BMessage* message);