ovn-northd: Use ovs_be32 for an IP address in find_lrp_member_ip().

Fixes a number of warnings from "sparse".

Fixes: 4685e52 ("ovn: Support multiple addresses on a single logical router port.")
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Gurucharan Shetty <guru@ovn.org>

ovn/northd/ovn-northd.c

@@ -2034,7 +2034,7 @@ lrport_is_enabled(const struct nbrec_logical_router_port *lrport)
 static const char *
 find_lrp_member_ip(const struct ovn_port *op, const char *ip_s)
 {
-    uint32_t ip;
+    ovs_be32 ip;
 
     if (!ip_parse(ip_s, &ip)) {
         static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);