/atom New() => Initialize() [MDB IGNORE] (#8298)

* Find and replace argless atom New() to Initialize().

* Manual replacement of no-arg New() to Initialize().

* Manually replacing remaining New() overrides.

* Fixing linter issues with now-removed New() args.

* Tidying area init overrides.

* Porting Neb's atom subsystem.

* Trying to isolate init problems.

* Adjusting Init code post-test.

* Merging duplicate Initialize() procs.

* Merge resolution.

code/modules/projectiles/targeting/targeting_overlay.dm

@@ -18,10 +18,12 @@
 	var/active =    0          // Is our owner intending to take hostages?
 	var/target_permissions = 0 // Permission bitflags.
 
-/obj/aiming_overlay/New(var/newowner)
-	..()
-	owner = newowner
-	loc = null
+/obj/aiming_overlay/Initialize()
+	. = ..()
+	owner = loc
+	if(!istype(owner))
+		return INITIALIZE_HINT_QDEL
+	moveToNullspace()
 	verbs.Cut()
 
 /obj/aiming_overlay/proc/toggle_permission(var/perm)