avoid mem leak

source/libs/stream/src/tstreamFileState.c

@@ -16,12 +16,12 @@
 #include "tstreamFileState.h"
 
 #include "query.h"
+#include "storageapi.h"
 #include "streamBackendRocksdb.h"
 #include "taos.h"
 #include "tcommon.h"
 #include "thash.h"
 #include "tsimplehash.h"
-#include "storageapi.h"
 
 #define FLUSH_RATIO                    0.5
 #define FLUSH_NUM                      4
@@ -420,6 +420,7 @@ int32_t deleteExpiredCheckPoint(SStreamFileState* pFileState, TSKEY mark) {
       return TSDB_CODE_FAILED;
     }
     sscanf(val, "%" PRId64 "", &maxCheckPointId);
+    taosMemoryFree(val);
   }
   for (int64_t i = maxCheckPointId; i > 0; i--) {
     char    buf[128] = {0};
@@ -435,9 +436,11 @@ int32_t deleteExpiredCheckPoint(SStreamFileState* pFileState, TSKEY mark) {
     if (ts < mark) {
       // statekey winkey.ts < mark
       forceRemoveCheckpoint(pFileState, i);
+      taosMemoryFreeClear(val);
       break;
     } else {
     }
+    taosMemoryFree(val);
   }
   return code;
 }