Fix gimp warning:
Fix gimp warning:

(gimp:9593): Gdk-CRITICAL **: gdk_window_get_origin: assertion
`GDK_IS_WINDOW (window)' failed


gnufabio/qtcurve,KDE/qtcurve,gnufabio/qtcurve,KDE/qtcurve,KDE/qtcurve,gnufabio/qtcurve,gnufabio/qtcurve,KDE/qtcurve