fixed bug #44378 (TCP connections are not aborted on netif remove)

src/include/lwip/tcp_impl.h

@@ -533,6 +533,7 @@ s16_t tcp_pcbs_sane(void);
  * that a timer is needed (i.e. active- or time-wait-pcb found). */
 void tcp_timer_needed(void);
 
+void tcp_netif_ipv4_addr_changed(const ip_addr_t* old_addr, const ip_addr_t* new_addr);
 
 #ifdef __cplusplus
 }