Remove unnecessary locking for thread-local packet-queues breaking on Win32.

src/tm-threads.c

@@ -81,11 +81,13 @@ typedef struct TmSlot_ {
     void *slot_data;
 
     /**< queue filled by the SlotFunc with packets that will
-     *   be processed futher _before_ the current packet. */
+     *   be processed futher _before_ the current packet.
+     *   The locks in the queue are NOT used */
     PacketQueue slot_pre_pq;
 
     /**< queue filled by the SlotFunc with packets that will
-     *   be processed futher _after_ the current packet. */
+     *   be processed futher _after_ the current packet. The
+     *   locks in the queue are NOT used */
     PacketQueue slot_post_pq;
 
     /* linked list, only used by TmVarSlot */

src/tmqh-packetpool.c

@@ -175,6 +175,8 @@ void TmqhOutputPacketpool(ThreadVars *t, Packet *p)
  *
  *  \param pq Pointer to the packetqueue from which the packets have to be
  *            returned back to the packetpool
+ *
+ *  \warning this function assumes that the pq does not use locking
  */
 void TmqhReleasePacketsToPacketPool(PacketQueue *pq)
 {
@@ -183,12 +185,8 @@ void TmqhReleasePacketsToPacketPool(PacketQueue *pq)
     if (pq == NULL)
         return;
 
-    SCMutexLock(&pq->mutex_q);
-
     while ( (p = PacketDequeue(pq)) != NULL)
         TmqhOutputPacketpool(NULL, p);
 
-    SCMutexUnlock(&pq->mutex_q);
-
     return;
 }