vim: Import v8.2.1976

* 8.2.1976: cannot backspace in prompt buffer after using cursor-left
* 8.2.1975: Win32: memory leak when encoding conversion fails
* 8.2.1974: Vim9: test for has('gui_running') fails with VIMDLL
* 8.2.1973: finding a patch number can be a bit slow
* 8.2.1972: crash when recreating nested fold
* 8.2.1971: memory leak when map() fails

gitlog.txt

@@ -1 +1 @@
-* [8.2.1975](https://github.com/vim/vim/commit/bbf9f344afd08954163191ed678352fb554fc254): Win32: memory leak when encoding conversion fails\n* [8.2.1974](https://github.com/vim/vim/commit/29b281ba8ddf176ae34b22e6a9b8e0ddcbcce665): Vim9: test for has('gui\_running') fails with VIMDLL\n* [8.2.1973](https://github.com/vim/vim/commit/232f4612e2b0a6a205ae385740078f6b8af05e75): finding a patch number can be a bit slow\n* [8.2.1972](https://github.com/vim/vim/commit/5e1f22ff614821b8fc7294c9dd22765acd403aeb): crash when recreating nested fold\n* [8.2.1971](https://github.com/vim/vim/commit/c56936e2ba4fd219f56aab616fcb283132455697): memory leak when map() fails
+* [8.2.1976](https://github.com/vim/vim/commit/6f6244855fbce5aaa718cd5001a29aac3c5c15d6): cannot backspace in prompt buffer after using cursor-left\n* [8.2.1975](https://github.com/vim/vim/commit/bbf9f344afd08954163191ed678352fb554fc254): Win32: memory leak when encoding conversion fails\n* [8.2.1974](https://github.com/vim/vim/commit/29b281ba8ddf176ae34b22e6a9b8e0ddcbcce665): Vim9: test for has('gui\_running') fails with VIMDLL\n* [8.2.1973](https://github.com/vim/vim/commit/232f4612e2b0a6a205ae385740078f6b8af05e75): finding a patch number can be a bit slow\n* [8.2.1972](https://github.com/vim/vim/commit/5e1f22ff614821b8fc7294c9dd22765acd403aeb): crash when recreating nested fold\n* [8.2.1971](https://github.com/vim/vim/commit/c56936e2ba4fd219f56aab616fcb283132455697): memory leak when map() fails