zebra: i declaration shadows other i declared

Clear up some confustion

Signed-off-by: Donald Sharp <sharpd@nvidia.com>

zebra/zebra_nhg.c

@@ -1820,18 +1820,19 @@ static struct nexthop *nexthop_set_resolved(afi_t afi,
 
 	/* Copy labels of the resolved route and the parent resolving to it */
 	if (policy) {
-		int i = 0;
+		int label_num = 0;
 
 		/*
 		 * Don't push the first SID if the corresponding action in the
 		 * LFIB is POP.
 		 */
 		if (!newhop->nh_label || !newhop->nh_label->num_labels
 		    || newhop->nh_label->label[0] == MPLS_LABEL_IMPLICIT_NULL)
-			i = 1;
+			label_num = 1;
 
-		for (; i < policy->segment_list.label_num; i++)
-			labels[num_labels++] = policy->segment_list.labels[i];
+		for (; label_num < policy->segment_list.label_num; label_num++)
+			labels[num_labels++] =
+				policy->segment_list.labels[label_num];
 		label_type = policy->segment_list.type;
 	} else if (newhop->nh_label) {
 		for (i = 0; i < newhop->nh_label->num_labels; i++) {