vim: Import v8.2.4632

* 8.2.4632: using freed memory in flatten()
* 8.2.4631: crash when switching window in BufWipeout autocommand
* 8.2.4630: 'cursorline' not always updated with 'culopt' is "screenline"
* 8.2.4629: flattennew() makes a deep copy unnecessarily

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* [8.2.4628](https://github.com/vim/vim/commit/5e877baf87530d5c4fe4da2c5a6269cf19526c27): not enough testing for 2/3 letter substitute commands\n* [8.2.4627](https://github.com/vim/vim/commit/acf7d73a7f5cdd63b34de777a4ce5eb3e2ba0ab3): flatten() does not use maxdepth correctly\n* [8.2.4626](https://github.com/vim/vim/commit/abb6fbd14d985b9b36a4e336d6edaf9853888ac1): Visual area not updated when removing sign in Visual mode\n* [8.2.4625](https://github.com/vim/vim/commit/90da27b9277d74521202e5c146a09056696898ee): old Coverity warning for resource leak\n* [8.2.4624](https://github.com/vim/vim/commit/5d46dcfeed4fcbbab371e17e1072b0cc9abe5217): old Coverity warning for resource leak\n* [8.2.4623](https://github.com/vim/vim/commit/03a297c63f1512ba9783104a343dc7e2024e0bb0): Coverity warns for using uninitialized field\n* [8.2.4622](https://github.com/vim/vim/commit/43216611a5accd32a53fe77d4552a36f6ed30c74): Vim9: crash with :execute and :finish
+* [8.2.4632](https://github.com/vim/vim/commit/f3980dc5d0a5f873cf764b8ba3e567e42259e4e5): using freed memory in flatten()\n* [8.2.4631](https://github.com/vim/vim/commit/347538fad0c503249ebdedd5884c2081257c9f61): crash when switching window in BufWipeout autocommand\n* [8.2.4630](https://github.com/vim/vim/commit/bf269ed0b0bd8414eea7bea17465b2738a9a2b55): 'cursorline' not always updated with 'culopt' is "screenline"\n* [8.2.4629](https://github.com/vim/vim/commit/c6c1ec4da53db9d292fa3dd081c20123f8261178): flattennew() makes a deep copy unnecessarily