fixup! pack-objects (mingw): demonstrate a segmentation fault with large deltas

We need to explicitly allow the `file://` protocol for our tests to
work, as a consequence of the fix for CVE-2022-39253.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

t/t7422-submodule-long-path.sh

@@ -25,6 +25,7 @@ pwdlen=$(echo "$pwd" | wc -c)
 longpath=$(echo $longpath180 | cut -c 1-$((170-$pwdlen)))
 
 test_expect_success 'submodule with a long path' '
+	git config --global protocol.file.allow always &&
 	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME= \
 	git -c init.defaultBranch=long init --bare remote &&
 	test_create_repo bundle1 &&