decode: release refs from PacketFree

Mostly helps unittests.

src/decode.h

@@ -856,7 +856,9 @@ void CaptureStatsSetup(ThreadVars *tv, CaptureStats *s);
 /**
  *  \brief Cleanup a packet so that we can free it. No memset needed..
  */
-#define PACKET_DESTRUCTOR(p) do {                  \
+#define PACKET_DESTRUCTOR(p)                                                                       \
+    do {                                                                                           \
+        PACKET_RELEASE_REFS((p));                                                                  \
         if ((p)->pktvar != NULL) {                                                                 \
             PktVarFree((p)->pktvar);                                                               \
         }                                                                                          \
@@ -866,7 +868,6 @@ void CaptureStatsSetup(ThreadVars *tv, CaptureStats *s);
         PACKET_PROFILING_RESET((p));                                                               \
     } while (0)
 
-
 /* macro's for setting the action
  * handle the case of a root packet
  * for tunnels */

src/tmqh-packetpool.c

@@ -225,14 +225,14 @@ Packet *PacketPoolGetPacket(void)
 void PacketPoolReturnPacket(Packet *p)
 {
     PktPool *my_pool = GetThreadPacketPool();
-
-    PACKET_RELEASE_REFS(p);
-
     PktPool *pool = p->pool;
     if (pool == NULL) {
         PacketFree(p);
         return;
     }
+
+    PACKET_RELEASE_REFS(p);
+
 #ifdef DEBUG_VALIDATION
     BUG_ON(pool->initialized == 0);
     BUG_ON(pool->destroyed == 1);