Merge pull request #1033 from Citadel-Station-13/upstream-merge-27369

[MIRROR] Fixes some holocall issues

code/datums/holocall.dm

@@ -31,6 +31,7 @@
 		var/obj/machinery/holopad/H = I
 		if(!QDELETED(H) && H.is_operational())
 			dialed_holopads += H
+			H.say("Incoming call.")
 			LAZYADD(H.holo_calls, src)
 
 	if(!dialed_holopads.len)
@@ -42,12 +43,16 @@
 
 //cleans up ALL references :)
 /datum/holocall/Destroy()
-	QDEL_NULL(eye)
-
 	user.reset_perspective()
+	if(user.client)
+		for(var/datum/camerachunk/chunk in eye.visibleCameraChunks)
+			user.client.images -= chunk.obscured
+	user.remote_control = null
+	QDEL_NULL(eye)
 	
 	user = null
-	hologram.HC = null
+	if(hologram)
+		hologram.HC = null
 	hologram = null
 	calling_holopad.outgoing_call = null
 

code/game/machinery/hologram.dm

@@ -26,8 +26,6 @@ Possible to do for anyone motivated enough:
 
 #define HOLOPAD_PASSIVE_POWER_USAGE 1
 #define HOLOGRAM_POWER_USAGE 2
-
-GLOBAL_LIST_EMPTY(holopads)
 #define HOLOPAD_MODE RANGE_BASED
 
 /obj/machinery/holopad