dnsdist: Fix a double-free when a DoH cross-protocol response is dropped

diff --git a/pdns/dnsdistdist/doh.cc b/pdns/dnsdistdist/doh.cc
index 3bfd66a0087820291d1374afb39e5c91dad23be4..6c125fdf24f6edadc7a681e6d8645afd9c68ae78 100644 (file)
--- a/pdns/dnsdistdist/doh.cc
+++ b/pdns/dnsdistdist/doh.cc
@@ -459,6 +459,7 @@ public:
 
     if (!processResponse(du->response, localRespRuleActions, dr, false, false)) {
       du->release();
+      du = nullptr;
       return;
     }