Hi,
reported two places might invoke twice of fclose, aof.c#L1211 and rdb.c#L1008，
they are similar as followed:

    if (fclose(fp) == EOF) goto werr;
   ........
werr:
   .......
    fclose(fp);
   ........

while invoking twice of fclose is undefined behavior, you might want to take a look. (reference to the RETURN VALUE part of https://linux.die.net/man/3/fclose)

Regards,