From 632f7700bfcdaa2b3c2d9d0d893f44f23433e522 Mon Sep 17 00:00:00 2001
From: evilsocket <evilsocket@gmail.com>
Date: Sun, 9 Sep 2018 14:02:36 +0300
Subject: [PATCH] misc: small fix or general refactoring i did not bother
 commenting

---
 packets/mdns.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packets/mdns.go b/packets/mdns.go
index e43cab7f..85246247 100644
--- a/packets/mdns.go
+++ b/packets/mdns.go
@@ -20,6 +20,12 @@ var (
 func MDNSGetMeta(pkt gopacket.Packet) map[string]string {
 	meta := make(map[string]string)
 
+	defer func() {
+		if r := recover(); r != nil {
+			meta = nil
+		}
+	}()
+
 	if ludp := pkt.Layer(layers.LayerTypeUDP); ludp != nil {
 		if udp := ludp.(*layers.UDP); udp != nil && udp.SrcPort == MDNSPort && udp.DstPort == MDNSPort {
 			dns := layers.DNS{}
@@ -47,7 +53,7 @@ func MDNSGetMeta(pkt gopacket.Packet) map[string]string {
 		}
 	}
 
-	if len(meta) > 0 {
+	if meta != nil && len(meta) > 0 {
 		return meta
 	}
 	return nil