dpdk: fix pktmbuf pool private data init

Type: fix

Change-Id: I7349840af48eec209532dab43a8ad0bd68993268
Signed-off-by: Benoît Ganne <bganne@cisco.com>
(cherry picked from commit c32a84c70efb45081568fc8aa5fa1884d74865fe)

src/plugins/dpdk/buffer.c

@@ -90,6 +90,7 @@ dpdk_buffer_pool_init (vlib_main_t * vm, vlib_buffer_pool_t * bp)
   rte_mempool_set_ops_byname (nmp, "vpp-no-cache", NULL);
 
   /* Call the mempool priv initializer */
+  memset (&priv, 0, sizeof (priv));
   priv.mbuf_data_room_size = VLIB_BUFFER_PRE_DATA_SIZE +
     vlib_buffer_get_default_data_size (vm);
   priv.mbuf_priv_size = VLIB_BUFFER_HDR_SIZE;