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x11: Only update cursors if we have any

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We were accessing an on-demand created hash table
without checking if it had been created first.

Fixes: https://gitlab.gnome.org/GNOME/gtk/issues/2308
This commit is contained in:
Matthias Clasen 2019-12-13 14:46:00 -05:00
parent 6ddc214e68
commit bf2c29a36a
1 changed files with 3 additions and 0 deletions
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3
gdk/x11/gdkcursor-x11.c
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@ -305,6 +305,9 @@ gdk_x11_display_set_cursor_theme (GdkDisplay *display,
if (size > 0)
XcursorSetDefaultSize (xdisplay, size);
if (GDK_X11_DISPLAY (display)->cursors == NULL)
return;
g_hash_table_iter_init (&iter, GDK_X11_DISPLAY (display)->cursors);
while (g_hash_table_iter_next (&iter, &cursor, &xcursor))
{