zebra: Fix signed / unsigned build error

Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>

diff --git a/zebra/rt_netlink.c b/zebra/rt_netlink.c
index 825ad00100a38cdd9a2674446eb5cf5d13e570e1..19f453b150b6229ab65be86feb275da56454863b 100644 (file)
--- a/zebra/rt_netlink.c
+++ b/zebra/rt_netlink.c
@@ -1722,7 +1722,7 @@ int
 rta_addattr_l (struct rtattr *rta, unsigned int maxlen, int type,
               void *data, int alen)
 {
-  int len;
+  unsigned int len;
   struct rtattr *subrta;
 
   len = RTA_LENGTH (alen);