vim: Import v8.0.1803

* 8.0.1803: warning for uninitialized variable

Author: chrisbra

gitlog.txt

@@ -1 +1 @@
-* [8.0.1802](https://github.com/vim/vim/releases/tag/v8.0.1802): MS-Windows: terminal test fails\n* [8.0.1801](https://github.com/vim/vim/releases/tag/v8.0.1801): MS-Windows: redirecting terminal output does not work\n* [8.0.1800](https://github.com/vim/vim/releases/tag/v8.0.1800): X11: getting color is slow\n* Update runtime files.\n* [8.0.1799](https://github.com/vim/vim/releases/tag/v8.0.1799): no test for :registers command\n* [8.0.1798](https://github.com/vim/vim/releases/tag/v8.0.1798): MS-Windows: file considered read-only too often\n* [8.0.1797](https://github.com/vim/vim/releases/tag/v8.0.1797): terminal window is redrawn too often\n* [8.0.1796](https://github.com/vim/vim/releases/tag/v8.0.1796): GUI: click on tab fails when the focus is in a terminal
+* [8.0.1803](https://github.com/vim/vim/releases/tag/v8.0.1803): warning for uninitialized variable