fix(query): fix null ptr access in evaluation block distribution.

source/libs/executor/src/sysscanoperator.c

@@ -1879,7 +1879,8 @@ static int32_t initTableblockDistQueryCond(uint64_t uid, SQueryTableDataCond* pC
   pCond->order = TSDB_ORDER_ASC;
   pCond->numOfCols = 1;
   pCond->colList = taosMemoryCalloc(1, sizeof(SColumnInfo));
-    if (pCond->colList == NULL) {
+  pCond->pSlotList = taosMemoryMalloc(sizeof(int32_t));
+  if (pCond->colList == NULL || pCond->pSlotList == NULL) {
     terrno = TSDB_CODE_QRY_OUT_OF_MEMORY;
     return terrno;
   }
@@ -1888,6 +1889,8 @@ static int32_t initTableblockDistQueryCond(uint64_t uid, SQueryTableDataCond* pC
   pCond->colList->type = TSDB_DATA_TYPE_TIMESTAMP;
   pCond->colList->bytes = sizeof(TSKEY);
 
+  pCond->pSlotList[0] = 0;
+
   pCond->twindows = (STimeWindow){.skey = INT64_MIN, .ekey = INT64_MAX};
   pCond->suid = uid;
   pCond->type = TIMEWINDOW_RANGE_CONTAINED;