Fix missing else in static_add_ipv4() which was causing case of (!ifname)
to always be considered to be a blackhole route. (if gate is passed in, it
cant be).
diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c
index fe29e81..4098db2 100644
--- a/zebra/zebra_rib.c
+++ b/zebra/zebra_rib.c
@@ -1431,7 +1431,7 @@
   /* Make flags. */
   if (gate)
     type = STATIC_IPV4_GATEWAY;
-  if (ifname)
+  else if (ifname)
     type = STATIC_IPV4_IFNAME;
   else
     type = STATIC_IPV4_BLACKHOLE;