Fix $DISPLAY being set to wrong value
Issue #363 (closed), MR !72 (merged)
Related: Issue exo#79 (closed)
gdk_display_get_name () returns $WAYLAND_DISPLAY on Wayland environment. This value was set to $DISPLAY, which breaks programs that don't support Wayland. Now xfce4-mime-helper is patched to set $DISPLAY only with X11 environment.
Edited by Yongha Hwang