[PATCH] samples/bpf: Modify the incorrect format specifier

[liujing <liujing@xxxxxxxxxxxxxxxxxxxx>]

Replace %d with %u in snprintf() because it is "unsigned int".

Signed-off-by: liujing <liujing@xxxxxxxxxxxxxxxxxxxx>

diff --git a/samples/bpf/xdp_router_ipv4_user.c b/samples/bpf/xdp_router_ipv4_user.c
index 266fdd0b025d..3fc1d37fee7c 100644
--- a/samples/bpf/xdp_router_ipv4_user.c
+++ b/samples/bpf/xdp_router_ipv4_user.c
@@ -134,11 +134,11 @@ static void read_route(struct nlmsghdr *nh, int nll)
 					*((__be32 *)RTA_DATA(rt_attr)));
 				break;
 			case RTA_OIF:
-				sprintf(ifs, "%u",
+				sprintf(ifs, "%d",
 					*((int *)RTA_DATA(rt_attr)));
 				break;
 			case RTA_METRICS:
-				sprintf(metrics, "%u",
+				sprintf(metrics, "%d",
 					*((int *)RTA_DATA(rt_attr)));
 			default:
 				break;
-- 
2.27.0