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backends/x11: Only free cursor if it was created successfully

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XcursorLibraryLoadCursor can return 'None' if the current cursor theme
is missing the requested icon. If XFreeCursor is then called on this
cursor, it generates a BadCursor error causing gnome-shell to crash.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/254
This commit is contained in:
Sebastian Keller 2018-08-02 00:58:56 +02:00
parent deb541ef5a
commit e741adb82e
1 changed files with 3 additions and 1 deletions
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2
src/x11/meta-x11-display.c
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@ -1483,6 +1483,8 @@ meta_x11_display_reload_cursor (MetaX11Display *x11_display)
XDefineCursor (x11_display->xdisplay, x11_display->xroot, xcursor); XDefineCursor (x11_display->xdisplay, x11_display->xroot, xcursor);
XFlush (x11_display->xdisplay); XFlush (x11_display->xdisplay);
if (xcursor)
XFreeCursor (x11_display->xdisplay, xcursor); XFreeCursor (x11_display->xdisplay, xcursor);
} }