fix bug: explicitly close output file in Ogg FLAC case
fix bug: explicitly close output file in Ogg FLAC case

kode54/flac,LordJZ/libflac,kode54/flac,fredericgermain/flac,waitman/flac,fredericgermain/flac,kode54/flac,waitman/flac,Distrotech/flac,LordJZ/libflac,waitman/flac,fredericgermain/flac,LordJZ/libflac,Distrotech/flac,fredericgermain/flac,Distrotech/flac,kode54/flac,waitman/flac,Distrotech/flac,waitman/flac,LordJZ/libflac