[PATCH iproute2 1/3] bridge: minor change to mdb print

[Stephen Hemminger <stephen@networkplumber.org>]

Get port ifname once rather than on both sides of if(is_json_context).

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 bridge/mdb.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bridge/mdb.c b/bridge/mdb.c
index f38dc67c849a..9bdef0262c54 100644
--- a/bridge/mdb.c
+++ b/bridge/mdb.c
@@ -208,19 +208,19 @@ static void print_router_entries(FILE *fp, struct nlmsghdr *n,
 	} else {
 		struct rtattr *i = RTA_DATA(router);
 		uint32_t *port_ifindex = RTA_DATA(i);
+		const char *port_name = ll_index_to_name(*port_ifindex);
 
 		if (is_json_context()) {
 			open_json_array(PRINT_JSON, brifname);
 			open_json_object(NULL);
 
 			print_string(PRINT_JSON, "port", NULL,
-				     ll_index_to_name(*port_ifindex));
+				     port_name);
 			close_json_object();
 			close_json_array(PRINT_JSON, NULL);
 		} else {
 			fprintf(fp, "router port dev %s master %s\n",
-				ll_index_to_name(*port_ifindex),
-				brifname);
+				port_name, brifname);
 		}
 	}
 	close_json_array(PRINT_JSON, NULL);
-- 
2.17.1