local: fix nx_style

Signed-off-by: ligd <liguiding1@xiaomi.com>

net/local/local_recvutils.c

@@ -80,12 +80,12 @@ int local_fifo_read(FAR struct file *filep, FAR uint8_t *buf,
         {
           ret = (int)nread;
 
-          if (nread == -EINTR)
+          if (ret == -EINTR)
             {
               ninfo("Ignoring signal\n");
               continue;
             }
-          else if (nread == -EAGAIN)
+          else if (ret == -EAGAIN)
             {
               goto errout;
             }

net/local/local_sendpacket.c

@@ -99,7 +99,6 @@ static int local_fifo_write(FAR struct file *filep, FAR const uint8_t *buf,
               nerr("ERROR: file_write failed: %zd\n", ret);
               break;
             }
-
         }
 
       nwritten += ret;