bugfix: use correct index in array

Accelleran CU configures DRB ID 4, not 1, so we need to take index 3
in the array 'priority', not 0.

So let's use i-1 as it was before.

openair2/RRC/NR/MESSAGES/asn1_msg.c

@@ -1014,7 +1014,7 @@ void fill_mastercellGroupConfig(NR_CellGroupConfig_t *cellGroupConfig, NR_CellGr
   // DRB Configuration
   for (int i = bearer_id_start; i < bearer_id_start + nb_bearers_to_setup; i++ ){
     const NR_RLC_Config_PR rlc_conf = use_rlc_um_for_drb ? NR_RLC_Config_PR_um_Bi_Directional : NR_RLC_Config_PR_am;
-    NR_RLC_BearerConfig_t *rlc_BearerConfig = get_DRB_RLC_BearerConfig(3 + i, i, rlc_conf, priority[0]); // Fixme: priority hardcoded see caller function, all is wrong
+    NR_RLC_BearerConfig_t *rlc_BearerConfig = get_DRB_RLC_BearerConfig(3 + i, i, rlc_conf, priority[i - 1]);
     asn1cSeqAdd(&cellGroupConfig->rlc_BearerToAddModList->list, rlc_BearerConfig);
     asn1cSeqAdd(&ue_context_mastercellGroup->rlc_BearerToAddModList->list, rlc_BearerConfig);
   }