net: lwip: fix mDNS test buffer fill size

Fill the mDNS domain name buffers with their array size instead of the size of the MDNS_DOMAIN_MAXLEN constant. This preserves the test intent of leaving different trailing bytes after equal names are encoded.

Generated-by: OpenAI Codex
Signed-off-by: Old-Ding <35417409+Old-Ding@users.noreply.github.com>

Author: Old-Ding

components/net/lwip/lwip-2.0.3/test/unit/mdns/test_mdns.c

@@ -572,14 +572,14 @@ START_TEST(domain_eq_length)
   LWIP_UNUSED_ARG(_i);
 
   memset(&domain1, 0, sizeof(domain1));
-  memset(domain1.name, 0xAA, sizeof(MDNS_DOMAIN_MAXLEN));
+  memset(domain1.name, 0xAA, sizeof(domain1.name));
   res = mdns_domain_add_label(&domain1, "multi", 5);
   fail_unless(res == ERR_OK);
   res = mdns_domain_add_label(&domain1, "cast", 4);
   fail_unless(res == ERR_OK);
 
   memset(&domain2, 0, sizeof(domain2));
-  memset(domain2.name, 0xBB, sizeof(MDNS_DOMAIN_MAXLEN));
+  memset(domain2.name, 0xBB, sizeof(domain2.name));
   res = mdns_domain_add_label(&domain2, "multi", 5);
   fail_unless(res == ERR_OK);
   res = mdns_domain_add_label(&domain2, "cast", 4);

components/net/lwip/lwip-2.1.2/test/unit/mdns/test_mdns.c

@@ -572,14 +572,14 @@ START_TEST(domain_eq_length)
   LWIP_UNUSED_ARG(_i);
 
   memset(&domain1, 0, sizeof(domain1));
-  memset(domain1.name, 0xAA, sizeof(MDNS_DOMAIN_MAXLEN));
+  memset(domain1.name, 0xAA, sizeof(domain1.name));
   res = mdns_domain_add_label(&domain1, "multi", 5);
   fail_unless(res == ERR_OK);
   res = mdns_domain_add_label(&domain1, "cast", 4);
   fail_unless(res == ERR_OK);
 
   memset(&domain2, 0, sizeof(domain2));
-  memset(domain2.name, 0xBB, sizeof(MDNS_DOMAIN_MAXLEN));
+  memset(domain2.name, 0xBB, sizeof(domain2.name));
   res = mdns_domain_add_label(&domain2, "multi", 5);
   fail_unless(res == ERR_OK);
   res = mdns_domain_add_label(&domain2, "cast", 4);