fix:异步socket demo里关闭消息写错了

demo/socket/Air105/async_socket_demo.lua

@@ -25,7 +25,7 @@ local function netCB(netc, event, param)
 	elseif event == socket.TX_OK then
         socket.wait(netc)
         log.info("发送完成")
-	elseif event == socket.CLOSE then
+	elseif event == socket.CLOSED then
         sys.publish("socket_disconnect")
     end
 end

demo/socket/EC618/async_socket_demo.lua

@@ -25,7 +25,7 @@ local function netCB(netc, event, param)
 	elseif event == socket.TX_OK then
         socket.wait(netc)
         log.info("发送完成")
-	elseif event == socket.CLOSE then
+	elseif event == socket.CLOSED then
         sys.publish("socket_disconnect")
     end
 end

demo/socket/EC618_W5500/async_socket_demo.lua

@@ -21,7 +21,7 @@ local function netCB(netc, event, param)
 	elseif event == socket.TX_OK then
         socket.wait(netc)
         log.info("发送完成")
-	elseif event == socket.CLOSE then
+	elseif event == socket.CLOSED then
         sys.publish("socket_disconnect")
     end
 end