vim: Import v8.1.0022

* 8.1.0022: repeating put from expression register fails
* 8.1.0021: clang warns for undefined behavior

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* Update runtime files.\n* [8.1.0020](https://github.com/vim/vim/releases/tag/v8.1.0020): cannot tell whether a register is executing or recording\n* [8.1.0019](https://github.com/vim/vim/releases/tag/v8.1.0019): error when defining a Lambda with index of a function result\n* [8.1.0018](https://github.com/vim/vim/releases/tag/v8.1.0018): using "gn" may select wrong text when wrapping\n* [8.1.0017](https://github.com/vim/vim/releases/tag/v8.1.0017): shell command completion has duplicates
+* [8.1.0022](https://github.com/vim/vim/releases/tag/v8.1.0022): repeating put from expression register fails\n* [8.1.0021](https://github.com/vim/vim/releases/tag/v8.1.0021): clang warns for undefined behavior