Fix warnings on Linux

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@3343 d4fa192b-c00b-0410-8231-f00ffab90ce4

lib/libjemalloc/jemalloc_linux.c

@@ -2029,6 +2029,7 @@ chunk_alloc(size_t size, bool zero)
 {
 	void *ret;
 
+	(void)zero; /* XXX */
 	assert(size != 0);
 	assert((size & chunksize_mask) == 0);
 
@@ -3045,6 +3046,7 @@ arena_bin_malloc_easy(arena_t *arena, arena_bin_t *bin, arena_run_t *run)
 {
 	void *ret;
 
+	(void)arena; /* XXX */
 	assert(run->magic == ARENA_RUN_MAGIC);
 	assert(run->nfree > 0);