Makes uv_fs_mkdir return UV_EINVAL for invalid directory names instead of UV_ENOENT. Refs: https://github.com/nodejs/node/issues/31177 PR-URL: https://github.com/libuv/libuv/pull/2601 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>