configure, netsniff-ng: if no libgeopip, do not link against libz

In netsniff-ng, we only use libz in combination with libgeoip, so if
we lack either one of them, do not link against the other either.
This would be a waste otherwise.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/geoip.h b/geoip.h
index c84b335..3a49b2b 100644
--- a/geoip.h
+++ b/geoip.h
@@ -7,7 +7,7 @@
 #include "config.h"
 #include "die.h"
 
-#ifdef HAVE_GEOIP
+#if defined(HAVE_GEOIP) && defined(HAVE_LIBZ)
 extern void init_geoip(int enforce);
 extern void update_geoip(void);
 extern int geoip_working(void);