Fix build errors

src/qos.c

@@ -310,7 +310,7 @@ dscp_pcp_conv_result dscp_pcp2qosmap_simple(int pcp, char *str, size_t len)
 		 * Map DSCP [0, 63] to PCP passed as argument,
 		 * all other PCP->DSCP ranges are mapped to [255, 255] (unused)
 		 */
-		sprintf(s, "%s%d,%d", (i != 0) ? ",",
+		sprintf(s, "%s%d,%d", (i != 0) ? "," : "",
 				(pcp == i) ? 0 : 255,
 				(pcp == i) ? 63 : 255);
 		if ((strlen(str) + strlen(s)) >= len)
@@ -332,10 +332,10 @@ int qos_apply_dscp_rules(void *agent)
 	int biggest_precedence = -1;
 	size_t i;
 
-	dbg("%s: finding DSCP rule with the highest precedence\n");
+	dbg("%s: finding DSCP rule with the highest precedence\n", __func__);
 	i = 0;
 	list_for_each_entry(r, &a->qos_rules, list) {
-		if (r->spr.precedence > biggest_dscp_precedence) {
+		if (r->spr.precedence > biggest_precedence) {
 			biggest_precedence = r->spr.precedence;
 			biggest_precedence_idx = i;
 		}