refactor:do some internal refactor.

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -3120,8 +3120,8 @@ int32_t doAppendRowFromFileBlock(SSDataBlock* pResBlock, STsdbReader* pReader, S
   }
 
   SColVal cv = {0};
-  int32_t numOfInputCols = taosArrayGetSize(pBlockData->aIdx);
-  int32_t numOfOutputCols = blockDataGetNumOfCols(pResBlock);
+  int32_t numOfInputCols = pBlockData->aIdx->size;
+  int32_t numOfOutputCols = pResBlock->pDataBlock->size;
 
   while (i < numOfOutputCols && j < numOfInputCols) {
     SColumnInfoData* pCol = TARRAY_GET_ELEM(pResBlock->pDataBlock, i);

source/dnode/vnode/src/tsdb/tsdbUtil.c

@@ -1050,7 +1050,6 @@ int32_t tColDataGetValue(SColData *pColData, int32_t iVal, SColVal *pColVal) {
   }
 
   // get value
-//  SValue value;
   if (IS_VAR_DATA_TYPE(pColData->type)) {
     if (iVal + 1 < pColData->nVal) {
       pColVal->value.nData = pColData->aOffset[iVal + 1] - pColData->aOffset[iVal];
@@ -1065,8 +1064,6 @@ int32_t tColDataGetValue(SColData *pColData, int32_t iVal, SColVal *pColVal) {
 
   pColVal->cid = pColData->cid;
   pColVal->type = pColData->type;
-//  pColVal->value = value;
-//  *pColVal = COL_VAL_VALUE(pColData->cid, pColData->type, value);
 
 _exit:
   return code;