nr rlc: bugfix - so_end was used instead of sn_end

openair2/LAYER2/nr_rlc/nr_rlc_entity_am.c

@@ -1044,7 +1044,7 @@ next_pdu:
 set_end_different_sdu:
   /* don't go more than rx_highest_status - 1 */
   if (sn_compare_rx(entity, entity->rx_highest_status, cur->sn) <= 0) {
-    ret.so_end = (entity->rx_highest_status - 1 + entity->sn_modulus) %
+    ret.sn_end = (entity->rx_highest_status - 1 + entity->sn_modulus) %
                       entity->sn_modulus;
     ret.so_end   = 0xffff;
     return ret;