File add-light-locker-support.patch of Package xfce4-session

diff --git a/scripts/xflock4 b/scripts/xflock4
index 7ebb423a..061cd248 100644
--- a/scripts/xflock4
+++ b/scripts/xflock4
@@ -29,7 +29,8 @@ for lock_cmd in \
     "$LOCK_CMD" \
     "xfce4-screensaver-command --lock" \
     "xscreensaver-command -lock" \
-    "gnome-screensaver-command --lock"
+    "gnome-screensaver-command --lock" \
+    "light-locker-command -l"
 do
     if [ ! -z "$lock_cmd" ]; then
         $lock_cmd >/dev/null 2>&1 && exit