update DelayGuildMOTD function in chat

2/3/4/5/6/7/ElvUI/Modules/Chat/Chat.lua

@@ -1416,9 +1416,14 @@ function CH:DelayGuildMOTD()
 		if delay < 7 then return end
 		local msg = GetGuildRosterMOTD()
 		for i = 1, NUM_CHAT_WINDOWS do
+			local channel
 			chat = _G["ChatFrame"..i]
 			for k, v in pairs(chat.messageTypeList) do
-				if chat and v == "GUILD" then
+				if v == "GUILD" then
+					channel = v
+				end
+			end
+			if chat and channel then
 				if msg and strlen(msg) > 0 then
 					local info = ChatTypeInfo["GUILD"]
 					local string = format(GUILD_MOTD_TEMPLATE, msg)
@@ -1427,7 +1432,6 @@ function CH:DelayGuildMOTD()
 				chat:RegisterEvent("GUILD_MOTD")
 			end
 		end
-		end
 		this:SetScript("OnUpdate", nil)
 	end)
 end