Abdelrazak Younes 83eb07fc4b Fix crash on exit after a Buffer switch.
Log:
* lyxfunc.C:
  - LyXFunc::dispatch(): put some save guards before using
    BufferView::cursor() and sendDispatchMessage().

* BufferView_pimpl.C
  - BufferView::Pimpl::setBuffer(): return before if exiting.

* WorkArea.C:
  - WorkArea::redraw(): update the toolbar when greying out.

* LyXView.C:
  - LyXView::setBuffer(): sanitization 


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@14815 a592a061-630c-0410-9148-cb99ea01b6c8
2006-08-23 08:27:51 +00:00
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