fix(query): fix syntax error.

source/dnode/vnode/src/tq/tqScan.c

@@ -74,7 +74,6 @@ int32_t tqScanData(STQ* pTq, const STqHandle* pHandle, SMqDataRsp* pRsp, STqOffs
   qTaskInfo_t          task = pExec->task;
 
   if (qStreamPrepareScan(task, pOffset, pHandle->execHandle.subType) < 0) {
-    tqError("prepare scan failed, return");
     return -1;
   }
 
@@ -119,7 +118,6 @@ int32_t tqScanTaosx(STQ* pTq, const STqHandle* pHandle, STaosxRsp* pRsp, SMqMeta
   qTaskInfo_t          task = pExec->task;
 
   if (qStreamPrepareScan(task, pOffset, pHandle->execHandle.subType) < 0) {
-    tqDebug("tqScanTaosx prepare scan failed, return");
     return -1;
   }
 

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

@@ -2220,7 +2220,7 @@ static int32_t mergeFileBlockAndLastBlock(STsdbReader* pReader, SLastBlockReader
         return mergeRowsInFileBlocks(pBlockData, pBlockScanInfo, key, pReader);
       } else if (key == ts) {
         SRow*       pTSRow = NULL;
-        SRowMerger* pMerger = pMerger;
+        SRowMerger* pMerger = &pReader->status.merger;
 
         int32_t code = tsdbRowMergerAdd(pMerger, &fRow, pReader->pSchema);
         if (code != TSDB_CODE_SUCCESS) {