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x11: Account for variable being possibly NULL

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We might end up with a NULL opaque_region here in some circumstances
(client deleted _NET_WM_OPAQUE_REGION, or passed invalid data or a
region with 0 rectangles), account for that when freeing the variable.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2758>
This commit is contained in:
Carlos Garnacho 2022-12-16 19:00:22 +01:00
parent 2b6651327e
commit c6c7f310d8
1 changed files with 1 additions and 1 deletions
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src/x11/window-props.c
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@ -715,7 +715,7 @@ reload_opaque_region (MetaWindow *window,
else if (window->frame && value->source_xwindow == window->frame->xwindow)
meta_frame_set_opaque_region (window->frame, opaque_region);
cairo_region_destroy (opaque_region);
g_clear_pointer (&opaque_region, cairo_region_destroy);
}
static void