Fix bug #55171: Binding UDP PCB with different IP type PCBs does not work

by additionally checking IP address type

(cherry picked from commit 2ff0db9a9b047d1c94ddbeea010561d1b9032101)

src/core/udp.c

@@ -997,8 +997,10 @@ udp_bind(struct udp_pcb *pcb, const ip_addr_t *ipaddr, u16_t port)
         {
           /* port matches that of PCB in list and REUSEADDR not set -> reject */
           if ((ipcb->local_port == port) &&
+              (IP_GET_TYPE(&ipcb->local_ip) == IP_GET_TYPE(ipaddr)) &&
               /* IP address matches or any IP used? */
-              (ip_addr_cmp(&ipcb->local_ip, ipaddr) || ip_addr_isany(ipaddr) ||
+              (ip_addr_cmp(&ipcb->local_ip, ipaddr) ||
+              ip_addr_isany(ipaddr) ||
               ip_addr_isany(&ipcb->local_ip))) {
             /* other PCB already binds to this local IP and port */
             LWIP_DEBUGF(UDP_DEBUG,