Fixed lying mobs not updating gravity state

Also removed a few colons from turf.dm

code/game/turfs/simulated.dm

@@ -27,7 +27,9 @@
 
 	if (istype(A,/mob/living/carbon))
 		var/mob/living/carbon/M = A
-		if(M.lying)        return
+		if(M.lying)
+			..()
+			return
 		dirt++
 		var/obj/effect/decal/cleanable/dirt/dirtoverlay = locate(/obj/effect/decal/cleanable/dirt, src)
 		if (dirt >= 50)

code/game/turfs/turf.dm

@@ -112,34 +112,27 @@
 	if(!istype(atom, /atom/movable))
 		return
 
-	var/atom/movable/M = atom
+	var/atom/movable/A = atom
 
 	var/loopsanity = 100
-	if(ismob(M))
-		if(!M:lastarea)
-			M:lastarea = get_area(M.loc)
-		if(M:lastarea.has_gravity == 0)
+	if(ismob(A))
+		var/mob/M = A
+		if(!M.lastarea)
+			M.lastarea = get_area(M.loc)
+		if(M.lastarea.has_gravity == 0)
 			inertial_drift(M)
 
-	/*
-		if(M.flags & NOGRAV)
-			inertial_drift(M)
-	*/
-
-
-
 		else if(!istype(src, /turf/space))
-			M:inertia_dir = 0
-			var/mob/M1 = M
-			M1.make_floating(0)
+			M.inertia_dir = 0
+			M.make_floating(0)
 	..()
 	var/objects = 0
-	for(var/atom/A as mob|obj|turf|area in range(1))
+	for(var/atom/O as mob|obj|turf|area in range(1))
 		if(objects > loopsanity)	break
 		objects++
 		spawn( 0 )
-			if ((A && M))
-				A.HasProximity(M, 1)
+			if ((O && A))
+				O.HasProximity(A, 1)
 			return
 	return