Fix dlsim: Use UL_tti_req_ahead

openair1/SIMULATION/NR_PHY/dlsim.c

@@ -878,7 +878,7 @@ int main(int argc, char **argv)
         Sched_INFO.frame     = frame;
         Sched_INFO.slot      = slot;
         Sched_INFO.DL_req    = &gNB_mac->DL_req[0];
-        Sched_INFO.UL_tti_req    = &gNB_mac->UL_tti_req[0];
+        Sched_INFO.UL_tti_req    = gNB_mac->UL_tti_req_ahead[slot];
         Sched_INFO.UL_dci_req  = NULL;
         Sched_INFO.TX_req    = &gNB_mac->TX_req[0];
         nr_schedule_response(&Sched_INFO);