zebra: Fix solaris build issue

The number of parameters to rib_add_ipv4 has been increased.
Submitter of original patch failed to modify solaris code path.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
diff --git a/zebra/rtread_getmsg.c b/zebra/rtread_getmsg.c
index 5057358..8915394 100644
--- a/zebra/rtread_getmsg.c
+++ b/zebra/rtread_getmsg.c
@@ -92,7 +92,7 @@
 
 	rib_add_ipv4 (ZEBRA_ROUTE_KERNEL, zebra_flags, &prefix,
 		      &gateway, NULL, 0, VRF_DEFAULT, RT_TABLE_MAIN,
-		      0, 0, SAFI_UNICAST);
+		      0, 0, 0, SAFI_UNICAST);
 }
 
 void