From: Cleber Rosa <crosa@redhat.com>

The reference given to users when the result of
setup_git_directory_gently_1() is unexpected is incorrect.

This fixes the name of the function when presenting the BUG message.

Signed-off-by: Cleber Rosa <crosa@redhat.com>

Submitted-As: https://lore.kernel.org/git/pull.1255.git.1654782920256.gitgitgadget@gmail.com