From Ilka: Following fixes in guitest.C: - fix of SegV in Test Dialog that appear when close the dialog during   the histo filling - fix in sliders dialog - the mouse cursor had mot correct position   when the number changes in the text entry if the slider was moved - fix in message dialog - if the message dialog is closed while the   message window appear the application looks like frozen and does   not respond on mouse clicks.
From Ilka:
Following fixes in guitest.C:
- fix of SegV in Test Dialog that appear when close the dialog during
  the histo filling
- fix in sliders dialog - the mouse cursor had mot correct position
  when the number changes in the text entry if the slider was moved
- fix in message dialog - if the message dialog is closed while the
  message window appear the application looks like frozen and does
  not respond on mouse clicks.


git-svn-id: ecbadac9c76e8cf640a0bca86f6bd796c98521e3@12222 27541ba8-7e3a-0410-8455-c3a389f83636

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