vim: Import v9.1.1582

* 9.1.1582: style issue in vim9type.c and vim9generics.c
* runtime(doc): remove mention of ftp.vim.org
* runtime(doc): Tweak documentation style
* runtime(doc): Fix typo in :help help-summary
* 9.1.1581: possible memory leak in vim9generics.c
* 9.1.1580: possible memory leak in vim9type.c
* 9.1.1579: Coverity complains about unchecked return value
* 9.1.1578: configure: comment still mentions autoconf 2.71

Author: github-actions[bot]

gitlog.txt

@@ -1 +1 @@
-* [9.1.1577](https://github.com/vim/vim/commit/3416cee36f1f668dd31f9ee8461be908d3d59c06): Vim9: no generic support yet\n* [9.1.1576](https://github.com/vim/vim/commit/b486ed8266d3b8cd1ffab7d7f302fbd6d5a55c70): cannot easily trigger wildcard expansion\n* [runtime(doc): clarify C99 constraints and portability assumptions](https://github.com/vim/vim/commit/689f3bf3139bf8124adfa4bea3d4d8a438b9feb2)\n* [9.1.1575](https://github.com/vim/vim/commit/e1c507a9657f6ce39213b1de3cdb1184fc9c71a0): tabpanel not drawn correctly with wrapped lines\n* [9.1.1574](https://github.com/vim/vim/commit/b2013396d47d03309eb9e280c1e3f41b15b971f7): Dead code in mbyte.c
+* [9.1.1582](https://github.com/vim/vim/commit/d680d405397ff3b5dc9b6692d972a5796dd40b8b): style issue in vim9type.c and vim9generics.c\n* [runtime(doc): remove mention of ftp.vim.org](https://github.com/vim/vim/commit/774fe9d8fcdc299f55502e79d6986eb866ec5b26)\n* [runtime(doc): Tweak documentation style](https://github.com/vim/vim/commit/5711d768181c3b08869ac41ee947a56a26763450)\n* [runtime(doc): Fix typo in :help help-summary](https://github.com/vim/vim/commit/61cec2e761d630c8ee4be09c8e0096a98088a47a)\n* [9.1.1581](https://github.com/vim/vim/commit/97194523d599dff8ca4275e49a098271a2696661): possible memory leak in vim9generics.c\n* [9.1.1580](https://github.com/vim/vim/commit/13e1af7de9daba5f617d24295b8aaf894bf8c201): possible memory leak in vim9type.c\n* [9.1.1579](https://github.com/vim/vim/commit/7cf31ce9c434757301e910244e57aaf4f229e4f9): Coverity complains about unchecked return value\n* [9.1.1578](https://github.com/vim/vim/commit/ad5c9b4b11d2740173573baec7b20dfd2fbb7432): configure: comment still mentions autoconf 2.71