ui-snapshot: do not access $HOME

It's a bit tedious to have to do this here too. If we encounter other
issues with $HOME down the line, I'll look into adding some nice utility
functions to handle this, or perhaps giving up on the hope that we could
keep $HOME defined for scripts.

This commit additionally adds a test case, should the issue surface
again.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 file changed, 1 insertion, 0 deletions

diff --git a/tests/t0109-gitconfig.sh b/tests/t0109-gitconfig.sh
index 24b2942..c9d16a2 100755
--- a/tests/t0109-gitconfig.sh
+++ b/tests/t0109-gitconfig.sh
@@ -37,5 +37,6 @@ test_no_home_access_success foo/tree/file-1
 test_no_home_access_success foo/commit
 test_no_home_access_success foo/diff
 test_no_home_access_success foo/patch
+test_no_home_access_success foo/snapshot/master.tar.gz
 
 test_done