fix: fix compilation error

source/dnode/vnode/src/tsdb/tsdbRead2.c

@@ -1743,7 +1743,7 @@ static int32_t mergeFileBlockAndLastBlock(STsdbReader* pReader, SLastBlockReader
         return doMergeFileBlockAndLastBlock(pLastBlockReader, pReader, pBlockScanInfo, NULL, false);
       }
     }
-    if (key == tsLast) {
+    // the following for key == tsLast
     SRow*   pTSRow = NULL;
     int32_t code = tsdbRowMergerAdd(pMerger, &fRow, pReader->info.pSchema);
     if (code != TSDB_CODE_SUCCESS) {
@@ -1767,7 +1767,7 @@ static int32_t mergeFileBlockAndLastBlock(STsdbReader* pReader, SLastBlockReader
     taosMemoryFree(pTSRow);
     tsdbRowMergerClear(pMerger);
     return code;
-    }
+
   } else {  // only last block exists
     return doMergeFileBlockAndLastBlock(pLastBlockReader, pReader, pBlockScanInfo, NULL, false);
   }