* Fix memleak when writing CSV data. Fix issue #39607

packages/fcl-db/src/base/csvdataset.pp

@@ -177,6 +177,7 @@ begin
     FreeAndNil(FOPtions);
   FreeAndNil(Fline);
   FreeAndNil(FParser);
+  FreeAndNil(FBuilder);
   inherited Destroy;
 end;