Fix build for Apple

https://github.com/Hamlib/Hamlib/issues/1430

src/network.c

@@ -1034,6 +1034,7 @@ int is_wireless()
     return 0;
 }
 #else
+#ifndef __APPLE__
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <unistd.h>
@@ -1084,6 +1085,7 @@ int is_wireless()
     return 0;
 }
 #endif
+#endif
 
 
 void *multicast_receiver(void *arg)