t0108-patch: add 'tests_done' to end

Signed-off-by: Mark Lodato <lodatom@gmail.com>

tests/t0108-patch.sh

@@ -35,3 +35,5 @@ run_test 'generate patch for initial commit' '
 run_test 'find `cgit` signature' '
 	tail -1 trash/tmp | grep -e "^cgit"
 '
+
+tests_done