Merge pull request #8293 from comma/interfacefix

Couple fixes

code/game/objects/buckling.dm

@@ -24,6 +24,7 @@
 		return 0
 
 	M.buckled = src
+	M.facing_dir = null
 	M.set_dir(dir)
 	M.update_canmove()
 	buckled_mob = M

code/game/objects/structures/stool_bed_chair_nest/bed.dm

@@ -138,8 +138,8 @@
 		density = 1
 		icon_state = "up"
 	else
-		buckled_mob.pixel_y = 0
-		buckled_mob.old_y = 0
+		M.pixel_y = 0
+		M.old_y = 0
 		density = 0
 		icon_state = "down"