Fix memory leak in nr_rrc_ue_decode_dcch

* local dl_dcch_msg shall be freed after use

> Direct leak of 384 byte(s) in 6 object(s) allocated from:
    >0 0x7ffff74b4a57 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
    >1 0x555557737ced in SEQUENCE_decode_uper /cmake_targets/ran_build/build/openair2/RRC/LTE/MESSAGES/constr_SEQUENCE_uper.c:37
    >2 0x555557746da1 in uper_decode /cmake_targets/ran_build/build/openair2/RRC/LTE/MESSAGES/uper_decoder.c:83
    >3 0x555556fa4b31 in nr_rrc_ue_decode_dcch /openair2/RRC/NR_UE/rrc_UE.c:1612
    >4 0x555556fbb25c in rrc_nrue /openair2/RRC/NR_UE/rrc_UE.c:1792
    >5 0x555556fc4a4e in rrc_nrue_task /openair2/RRC/NR_UE/rrc_UE.c:1718
    >6 0x7ffff5e94ac2 in start_thread nptl/pthread_create.c:442

openair2/RRC/NR_UE/rrc_UE.c

@@ -1694,7 +1694,7 @@ static int nr_rrc_ue_decode_dcch(NR_UE_RRC_INST_t *rrc,
       break;
   }
   //  release memory allocation
-  SEQUENCE_free(&asn_DEF_NR_DL_DCCH_Message, (void *)dl_dcch_msg, 1);
+  SEQUENCE_free(&asn_DEF_NR_DL_DCCH_Message, dl_dcch_msg, ASFM_FREE_EVERYTHING);
   return 0;
 }