udp: use transport port refcnt on accept

Use udp transport refcnt instead of local port refcnt when accepting new
connections.

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ibc34677b1138682497f98e96b6fddb5b96094ff9
diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index f1dcab8..3a7de62 100644
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -123,8 +123,8 @@
       udp_connection_free (uc);
       return 0;
     }
-  transport_share_local_endpoint (TRANSPORT_PROTO_UDP, &uc->c_lcl_ip,
-				  uc->c_lcl_port);
+
+  udp_connection_share_port (uc->c_lcl_port, uc->c_is_ip4);
   return uc;
 }