7898 mdb's ::netstat doesn't print UDP conn_t pointer correctly

@@ -641,23 +641,24 @@
         uint_t opts = ncb->opts;
         int af = ncb->af;
         udp_t udp;
         conn_t *connp = &ncb->conn;
         char *state;
+        uintptr_t udp_kaddr;
 
         if (mdb_vread(connp, sizeof (conn_t), kaddr) == -1) {
                 mdb_warn("failed to read conn_t at %p", kaddr);
                 return (WALK_ERR);
         }
 
-        if (mdb_vread(&udp, sizeof (udp_t),
-            (uintptr_t)connp->conn_udp) == -1) {
-                mdb_warn("failed to read conn_udp at %p",
-                    (uintptr_t)connp->conn_udp);
+        udp_kaddr = (uintptr_t)connp->conn_udp;
+        if (mdb_vread(&udp, sizeof (udp_t), udp_kaddr) == -1) {
+                mdb_warn("failed to read conn_udp at %p", udp_kaddr);
                 return (WALK_ERR);
         }
 
+        /* Need to do these reassignments for the net_udp_*() routines below. */
         connp->conn_udp = &udp;
         udp.udp_connp = connp;
 
         if (!((opts & NETSTAT_ALL) || net_udp_active(&udp)) ||
             (af == AF_INET && !net_udp_ipv4(&udp)) ||

@@ -672,11 +673,11 @@
         else if (udp.udp_state == TS_DATA_XFER)
                 state = "CONNECTED";
         else
                 state = "UNKNOWN";
 
-        mdb_printf("%0?p %10s ", (uintptr_t)connp->conn_udp, state);
+        mdb_printf("%0?p %10s ", udp_kaddr, state);
         if (af == AF_INET) {
                 net_ipv4addrport_pr(&connp->conn_laddr_v6, connp->conn_lport);
                 mdb_printf(" ");
                 net_ipv4addrport_pr(&connp->conn_faddr_v6, connp->conn_fport);
         } else if (af == AF_INET6) {