ofproto-dpif: Eliminate unneeded call to ofproto_dpif_cast().

I noticed this was unneeded while looking over commit 7c33b18807804f
(ofproto-dpif: More efficient implementation of get_odp_port().).

Signed-off-by: Ben Pfaff <blp@nicira.com>

diff --git a/ofproto/ofproto-dpif.c b/ofproto/ofproto-dpif.c
index 5b86d46..4d8540e 100644 (file)
--- a/ofproto/ofproto-dpif.c
+++ b/ofproto/ofproto-dpif.c
@@ -7889,7 +7889,7 @@ odp_port_to_ofp_port(const struct ofproto_dpif *ofproto, uint32_t odp_port)
     struct ofport_dpif *port;
 
     port = odp_port_to_ofport(ofproto->backer, odp_port);
-    if (port && ofproto == ofproto_dpif_cast(port->up.ofproto)) {
+    if (port && &ofproto->up == port->up.ofproto) {
         return port->up.ofp_port;
     } else {
         return OFPP_NONE;