The 515 MegaPR early downport (#7783)

Co-authored-by: Selis <selis@xynolabs.com>
Co-authored-by: Selis <sirlionfur@hotmail.de>
Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>
Co-authored-by: SatinIsle <thesatinisle@gmail.com>
Co-authored-by: Heroman <alesha3000@list.ru>
Co-authored-by: Casey <a.roaming.shadow@gmail.com>
Co-authored-by: Raeschen <rycoop29@gmail.com>

code/game/objects/items/devices/radio/intercom.dm

@@ -21,13 +21,15 @@
 	. = ..()
 	var/area/A = get_area(src)
 	if(A)
-		GLOB.apc_event.register(A, src, /atom/proc/update_icon)
+		RegisterSignal(A, COMSIG_OBSERVER_APC, /atom/proc/update_icon)
 	update_icon()
 
 /obj/item/device/radio/intercom/Destroy()
 	var/area/A = get_area(src)
 	if(A)
-		GLOB.apc_event.unregister(A, src, /atom/proc/update_icon)
+		UnregisterSignal(A, COMSIG_OBSERVER_APC)
+	if(circuit)
+		QDEL_NULL(circuit)
 	return ..()
 
 /obj/item/device/radio/intercom/custom

code/game/objects/items/devices/radio/radio.dm

@@ -498,7 +498,7 @@ GLOBAL_DATUM(autospeaker, /mob/living/silicon/ai/announcer)
 				distance = 99
 			else
 				distance = jamming["distance"]
-			to_chat(M, "<span class='danger'>\icon[src][bicon(src)] You hear the [distance <= 2 ? "loud hiss" : "soft hiss"] of static.</span>")
+			to_chat(M, "<span class='danger'>[icon2html(src, M.client)] You hear the [distance <= 2 ? "loud hiss" : "soft hiss"] of static.</span>")
 			return FALSE
 
 		// First, we want to generate a new radio signal