From 2f1d0fd78874b941352bb3efddee8cd0b4b0c964 Mon Sep 17 00:00:00 2001
From: WanqQixiang <wangqixiang@espressif.com>
Date: Fri, 23 Aug 2024 09:59:43 +0800
Subject: [PATCH] Add check for subtype number

---
 src/lib/shell/commands/Dns.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib/shell/commands/Dns.cpp b/src/lib/shell/commands/Dns.cpp
index 327e14650c7a57..917f94f849d865 100644
--- a/src/lib/shell/commands/Dns.cpp
+++ b/src/lib/shell/commands/Dns.cpp
@@ -225,6 +225,7 @@ bool ParseSubType(int argc, char ** argv, Dnssd::DiscoveryFilter & filter)
     if (filterType == Dnssd::DiscoveryFilterType::kCompressedFabricId)
     {
         VerifyOrReturnError(ArgParser::ParseInt(subtype + 2, code, 16), false);
+        VerifyOrReturnValue(code != 0, false);
     }
     else
     {