Fixes turf slipping

code/game/turfs/open.dm

@@ -18,6 +18,7 @@
 	var/sound
 
 /turf/open/indestructible/sound/Entered(var/mob/AM)
+	..()
 	if(istype(AM))
 		playsound(src,sound,50,1)
 

code/game/turfs/simulated/chasm.dm

@@ -22,6 +22,7 @@
 	return
 
 /turf/open/chasm/Entered(atom/movable/AM)
+	..()
 	START_PROCESSING(SSobj, src)
 	drop_stuff(AM)
 

code/game/turfs/space/transit.dm

@@ -25,6 +25,7 @@
 	dir = EAST
 
 /turf/open/space/transit/Entered(atom/movable/AM, atom/OldLoc)
+	..()
 	if(!locate(/obj/structure/lattice) in src)
 		throw_atom(AM)
 

code/game/turfs/turf.dm

@@ -160,6 +160,7 @@
 	return TRUE //Nothing found to block so return success!
 
 /turf/Entered(atom/movable/AM)
+	..()
 	if(explosion_level && AM.ex_check(explosion_id))
 		AM.ex_act(explosion_level)