MDK compiler v5.27.1 warning

[geniusgogo]

lfs.c(980): warning: #68-D: integer conversion resulted in a change of sign
return (int)lfs_dir_fetchmatch(lfs, dir, pair, -1, 0, NULL, NULL, NULL);

[geky]

Hi @geniusgogo, thanks for creating an issue. Does this change fix the warning to you: 60e67ae?

I've added it to this PR: #337

[geky]

I believe this is resolved, feel free to reopen if otherwise.