fix compile error on windows

src/query/src/qExecutor.c

@@ -4435,7 +4435,7 @@ static void generateBlockDistResult(STableBlockDist *pTableBlockDist) {
 
   taosArraySort(blockInfos, compareBlockInfo);
 
-  sprintf(pTableBlockDist->result, 
+  int sz = sprintf(pTableBlockDist->result, 
           "summery: \n\t 5th=[%d], 25th=[%d], 50th=[%d],75th=[%d], 95th=[%d], 99th=[%d] \n\t min=[%"PRId64"], max=[%"PRId64"], avg = [%"PRId64"] \n\t totalRows=[%"PRId64"], totalBlocks=[%"PRId64"] \n\t seekHeaderTimeCost=[%"PRId64"(us)] \n\t rowsInMem=[%"PRId64"]",  
           getPercentileFromSortedArray(blockInfos, 0.05), getPercentileFromSortedArray(blockInfos, 0.25), getPercentileFromSortedArray(blockInfos, 0.50), 
           getPercentileFromSortedArray(blockInfos, 0.75), getPercentileFromSortedArray(blockInfos, 0.95), getPercentileFromSortedArray(blockInfos, 0.99),
@@ -4443,6 +4443,8 @@ static void generateBlockDistResult(STableBlockDist *pTableBlockDist) {
           totalRows, totalBlocks,
           pTableBlockDist->firstSeekTimeUs,
           pTableBlockDist->numOfRowsInMemTable);
+  UNUSE(sz);
+  return;
 } 
 void skipBlocks(SQueryRuntimeEnv *pRuntimeEnv) {
   SQuery *pQuery = pRuntimeEnv->pQuery;