Ported

code/modules/client/message.dm

@@ -2,8 +2,9 @@ GLOBAL_LIST_EMPTY(clientmessages)
 
 /proc/addclientmessage(var/ckey, var/message)
 	ckey = ckey(ckey)
-	if (!ckey || !message)
+	if(!ckey || !message)
 		return
-	if (!(ckey in GLOB.clientmessages))
-		GLOB.clientmessages[ckey] = list()
-	GLOB.clientmessages[ckey] += message
+	var/list/L = GLOB.clientmessages[ckey]
+	if(!L)
+		GLOB.clientmessages[ckey] = L = list()
+	L += message

code/modules/keybindings/bindings_client.dm

@@ -25,7 +25,7 @@
 		else
 			log_admin("Client [ckey] was just autokicked for flooding keysends; likely abuse but potentially lagspike.")
 			message_admins("Client [ckey] was just autokicked for flooding keysends; likely abuse but potentially lagspike.")
-			QDEL_IN(src, 1)
+			qdel(src)
 			return
 
 	///Check if the key is short enough to even be a real key

code/modules/research/rdconsole.dm

@@ -833,8 +833,8 @@ Nothing else in the console has ID requirements.
 	for(var/i in 1 to length(ui))
 		if(!findtextEx(ui[i], RDSCREEN_NOBREAK))
 			ui[i] += "<br>"
-		ui[i] = replacetextEx(ui[i], RDSCREEN_NOBREAK, "")
-	return ui.Join("")
+	. = ui.Join("")
+	return replacetextEx(., RDSCREEN_NOBREAK, "")
 
 /obj/machinery/computer/rdconsole/Topic(raw, ls)
 	if(..())