lock init

writer_lock must be inited before used.

Change-Id: Ib258aa09b3bccc4de6edba0eb75a7eec20f1a61f
Signed-off-by: JingLiuZTE <liu.jing5@zte.com.cn>
(cherry picked from commit 4c9f2a8050)

src/vppinfra/bihash_template.c

@@ -35,6 +35,7 @@ void BV (clib_bihash_init)
   vec_validate_aligned (h->buckets, nbuckets - 1, CLIB_CACHE_LINE_BYTES);
   h->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
 					   CLIB_CACHE_LINE_BYTES);
+  h->writer_lock[0] = 0;
 
   for (i = 0; i < nbuckets; i++)
     BV (clib_bihash_reset_cache) (h->buckets + i);