Fix remaining non-returning Destroys()

Plus a little refactor to mining flaps and spacepod doors- they now use
CanAtmosPass instead of manually setting the turf to no-atmos-passing

code/modules/projectiles/guns/energy/laser.dm

@@ -135,7 +135,7 @@ obj/item/weapon/gun/energy/laser/retro
 
 	Destroy()
 		processing_objects.Remove(src)
-		..()
+		return ..()
 
 
 	process()
@@ -172,7 +172,7 @@ obj/item/weapon/gun/energy/laser/retro
 
 	Destroy()
 		processing_objects.Remove(src)
-		..()
+		return ..()
 
 
 	process()

code/modules/projectiles/guns/energy/nuclear.dm

@@ -54,7 +54,7 @@
 
 	Destroy()
 		processing_objects.Remove(src)
-		..()
+		return ..()
 
 
 	process()

code/modules/projectiles/guns/energy/special.dm

@@ -109,7 +109,7 @@
 
 	Destroy()
 		processing_objects.Remove(src)
-		..()
+		return ..()
 
 	process()
 		charge_tick++

code/modules/projectiles/guns/projectile/crossbow.dm

@@ -45,7 +45,7 @@
 		user  << "[src] shatters into a scattering of overstressed metal shards as it leaves the crossbow."
 		var/obj/item/weapon/shard/shrapnel/S = new()
 		S.loc = get_turf(src)
-		src.Destroy()
+		qdel(src)
 
 /obj/item/weapon/arrow/baguette
 	name = "baguette"