tls: fix formatting of half open connections

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: If96dc748a716a261edfcb1020210bd73058e382f
diff --git a/src/vnet/tls/tls.c b/src/vnet/tls/tls.c
index 6905afc..c329463 100644
--- a/src/vnet/tls/tls.c
+++ b/src/vnet/tls/tls.c
@@ -1063,6 +1063,7 @@
 {
   u32 ho_index = va_arg (*args, u32);
   u32 __clib_unused thread_index = va_arg (*args, u32);
+  u32 __clib_unused verbose = va_arg (*args, u32);
   session_t *tcp_ho;
   tls_ctx_t *ho_ctx;