Prevent segfault when trying to schedule MAX_MOBILES_PER_GNB UEs

When the UE list is full, the iterator will run through all
MAX_MOBILES_PER_GNB UEs. It expects that eventually the pointer is NULL,
which is not the case if we have MAX_MOBILES_PER_GNB (or it simply
depends on the following memory). So give one array entry more, to
ensure that the last one is NULL.

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_dlsch.c

@@ -613,7 +613,7 @@ static void pf_dl(module_id_t module_id,
   gNB_MAC_INST *mac = RC.nrmac[module_id];
   NR_ServingCellConfigCommon_t *scc=mac->common_channels[0].ServingCellConfigCommon;
   // UEs that could be scheduled
-  UEsched_t UE_sched[MAX_MOBILES_PER_GNB] = {0};
+  UEsched_t UE_sched[MAX_MOBILES_PER_GNB + 1] = {0};
   int remainUEs = max_num_ue;
   int curUE = 0;
   int CC_id = 0;

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_ulsch.c

@@ -1790,7 +1790,7 @@ static void pf_ul(module_id_t module_id,
 
   const int min_rb = nrmac->min_grant_prb;
   // UEs that could be scheduled
-  UEsched_t UE_sched[MAX_MOBILES_PER_GNB] = {0};
+  UEsched_t UE_sched[MAX_MOBILES_PER_GNB + 1] = {0};
   int remainUEs = max_num_ue;
   int curUE = 0;