regress: Move test_list_model_none to warnlib
Since this test intentionally leaves off an annotation that will print a warning, it should be in warnlib.c. Otherwise it's not possible to compile Regress.gir with --warn-error.
See !198 (merged).
Since this test intentionally leaves off an annotation that will print a warning, it should be in warnlib.c. Otherwise it's not possible to compile Regress.gir with --warn-error.
See !198 (merged).