openwrt-packages-dist/utils/rtl-ais/patches/010-musl.patch

--- a/tcp_listener/tcp_listener.c
+++ b/tcp_listener/tcp_listener.c
@@ -6,6 +6,7 @@
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <errno.h>
 #include <stdio.h>
 #include <pthread.h>