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Fix potential NULL pointer dereference

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This commit is contained in:
Albrecht Schlosser 2021-02-10 14:11:04 +01:00
parent 086396ca54
commit d53d6f3bce
1 changed files with 1 additions and 1 deletions
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2
src/Fl_Window.cxx
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@ -135,7 +135,7 @@ Fl_Window* Fl_Widget::top_window_offset(int& xoff, int& yoff) const {
yoff += w->y();
w = w->window(); // walk up window hierarchy
}
return const_cast<Fl_Widget*>(w)->as_window();
return w ? const_cast<Fl_Widget*>(w)->as_window() : NULL;
}
/** Gets the x position of the window on the screen */