chatgui: fix Windows build - replace netinet/in.h with socket_compat.h

tools/chatgui/transport/utun_node.cpp

@@ -1,7 +1,7 @@
 // utun_node.cpp — embedded uTun node running in a dedicated thread
 #include "utun_node.h"
 #include <cinttypes>
-#include <netinet/in.h>
+#include "../../lib/socket_compat.h"
 
 #include "../db/db_manager.h"