Merge pull request #3822 from VOREStation/upstream-merge-5305

[MIRROR] Prevent autosay() from creating/deleting AIs

code/modules/mob/living/silicon/ai/ai.dm

@@ -1,7 +1,6 @@
 #define AI_CHECK_WIRELESS 1
 #define AI_CHECK_RADIO 2
 
-var/list/ai_list = list()
 var/list/ai_verbs_default = list(
 	// /mob/living/silicon/ai/proc/ai_recall_shuttle,
 	/mob/living/silicon/ai/proc/ai_emergency_message,
@@ -802,5 +801,17 @@ var/list/ai_verbs_default = list(
 	// If that is ever fixed please update this proc.
 	return TRUE
 
+//Special subtype kept around for global announcements
+/mob/living/silicon/ai/announcer/initialize()
+	. = ..()
+	mob_list -= src
+	living_mob_list -= src
+	dead_mob_list -= src
+	ai_list -= src
+	silicon_mob_list -= src
+
+/mob/living/silicon/ai/announcer/Life()
+	return
+
 #undef AI_CHECK_WIRELESS
 #undef AI_CHECK_RADIO