patch 9.0.1511: crash when using wrong arg types to assert_match() Commit: https://github.com/vim/vim/commit/12e7a1fe7527e9e59adbe248a95b4b532e3ec58c Author: zeertzjq <zeertzjq@outlook.com> Date: Sat May 6 12:20:05 2023 +0100 patch 9.0.1511: crash when using wrong arg types to assert_match() Problem: Crash when using wrong arg types to assert_match(). Solution: Check for NULL pointer. (closes https://github.com/vim/vim/issues/12349)