Fix compiler warning in ForwardLookup()

When compiling without "working getaddrinfo()", the "af" parameter of
ForwardLookup() is unused by that function. Mark it as such!

This prevents the following compiler warning:

  resolve.c:235:56: warning: unused parameter ‘af’
    [-Wunused-parameter]

1 files changed, 4 insertions, 0 deletions

diff --git a/src/ngircd/resolve.c b/src/ngircd/resolve.c
index a8a163f0..109d8b6c 100644
--- a/src/ngircd/resolve.c
+++ b/src/ngircd/resolve.c
@@ -232,7 +232,11 @@ ReverseLookup(const ng_ipaddr_t *IpAddr, char *resbuf, size_t reslen)
  * @return true if lookup successful, false if domain name not found
  */
 static bool
+#ifdef HAVE_WORKING_GETADDRINFO
 ForwardLookup(const char *hostname, array *IpAddr, int af)
+#else
+ForwardLookup(const char *hostname, array *IpAddr, UNUSED int af)
+#endif
 {
 	ng_ipaddr_t addr;