t/unit-tests: handle dashes in test suite filenames

The script is designed to extract function signatures that match a
specific pattern derived from the unit test file's name.
`generate-clar-decls.sh` does not pick up dashes in filenames, which
prevents the scripts from being run.

Adapt script to translate dashes (`-`) in test suite filenames to
underscores (`_`) to correctly extract the function signatures and run
the corresponding tests. This will be used by subsequent commits which
follows the same construct.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Seyi Kuforiji <kuforiji98@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/unit-tests/generate-clar-decls.sh

@@ -14,6 +14,7 @@ do
 	suite_name=$(basename "$suite")
 	suite_name=${suite_name%.c}
 	suite_name=${suite_name#u-}
+	suite_name=$(echo "$suite_name" | tr '-' '_')
 	sed -ne "s/^\(void test_${suite_name}__[a-zA-Z_0-9][a-zA-Z_0-9]*(void)\)$/extern \1;/p" "$suite" ||
 	exit 1
 done >"$OUTPUT"