From f8a95aa27f7b97eb791d0a95125a597990f56f64 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@ingics.com>
Date: Tue, 6 Sep 2016 23:11:20 +0800
Subject: [PATCH] dns: Drop unnecessary txid variable in dns_check_entry

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 src/core/dns.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/src/core/dns.c b/src/core/dns.c
index 11d8f200..b19f9b08 100644
--- a/src/core/dns.c
+++ b/src/core/dns.c
@@ -938,12 +938,9 @@ dns_check_entry(u8_t i)
   LWIP_ASSERT("array index out of bounds", i < DNS_TABLE_SIZE);
 
   switch (entry->state) {
-
-    case DNS_STATE_NEW: {
-      u16_t txid;
+    case DNS_STATE_NEW:
       /* initialize new entry */
-      txid = dns_create_txid();
-      entry->txid = txid;
+      entry->txid = dns_create_txid();
       entry->state = DNS_STATE_ASKING;
       entry->server_idx = 0;
       entry->tmr = 1;
@@ -956,8 +953,6 @@ dns_check_entry(u8_t i)
                     ("dns_send returned error: %s\n", lwip_strerr(err)));
       }
       break;
-    }
-
     case DNS_STATE_ASKING:
       if (--entry->tmr == 0) {
         if (++entry->retries == DNS_MAX_RETRIES) {