Resource leak

[QiAnXinCodeSafe]

Stream is opened

zstd/contrib/diagnose_corruption/check_flipped_bits.c

Line 94 in 07ad866

f = fopen(filename, "r");

Opened file never closed

zstd/contrib/diagnose_corruption/check_flipped_bits.c

Line 109 in 07ad866

return NULL;

[Cyan4973]

@felixhandte , this is part of newly added contrib/diagnose_corruption/check_flipped_bits tool.

It's a minor issue easily fixed.
More interesting, consider employing the nested-resources programming pattern, where all resources are created first (including fopen()), then checked, then action takes place, then all resources are released (including fopen()). This allows the action to feature multiple exit statements without a risk to forget releasing one resource.