nsswitch/wins: Define NETDB_* for other libc's

Define NETDB_SUCCESS and NETDB_INTERNAL if they are not defined. On
libc's such as musl NETDB_INTERNAL and NETDB_SUCCESS are not defined.

Signed-off-by: listout <brahmajit.xyz@gmail.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

nsswitch/wins.c

@@ -40,6 +40,14 @@ static pthread_mutex_t wins_nss_mutex = PTHREAD_MUTEX_INITIALIZER;
 #define INADDRSZ 4
 #endif
 
+#ifndef NETDB_INTERNAL
+#define NETDB_INTERNAL -1
+#endif
+
+#ifndef NETDB_SUCCESS
+#define NETDB_SUCCESS 0
+#endif
+
 _PUBLIC_ON_LINUX_
 NSS_STATUS _nss_wins_gethostbyname_r(const char *hostname,
 				     struct hostent *he,