extend ifdef guard to fix compilation on OpenBSD

otherwise in6_addr, AF_INET and AF_INET6 end up being undefined

Signed-off-by: Jasper Lievisse Adriaanse <[email protected]>

lib/socks_mosq.c

@@ -27,7 +27,7 @@ and the Eclipse Distribution License is available at
 #else
 # include <arpa/inet.h>
 #endif
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__OpenBSD__)
 # include <sys/socket.h>
 # include <netinet/in.h>
 #endif