Also close config file handle when leaving git_config_set_multivar_in_file() early

[乙酸鋰 <ch3cooli@xxxxxxxxx>]

Hi,

This patch fixes the captioned problem.
It is needed because our program statically link git.
In this case, do not assume a fail will call die() and exit program so
the handle is leave not closed.

Regards,
ch3cooli

Attachment: 0001-Also-close-config-file-handle-when-leaving-git_confi.patch
Description: Binary data