Fix AO being broken on ChangeTurf() (#3732)

Fix AO being broken on ChangeTurf()

code/modules/lighting/lighting_turf.dm

@@ -205,11 +205,13 @@
 	var/list/old_affecting_lights = affecting_lights
 	var/old_lighting_overlay = lighting_overlay
 	var/list/old_corners = corners
-	var/old_ao_neighbors = ao_neighbors
 
 	. = ..()
 
-	ao_neighbors = old_ao_neighbors
+#ifndef AO_USE_LIGHTING_OPACITY
+	if (permit_ao)
+		regenerate_ao()
+#endif
 
 	recalc_atom_opacity()
 	lighting_overlay = old_lighting_overlay

code/modules/mining/mine_turfs.dm

@@ -54,8 +54,6 @@
 		luminosity = 1
 
 	has_opaque_atom = TRUE
-	if (!mapload)
-		regenerate_ao()
 
 	if (smooth)
 		pixel_x = -4