vim-patch:7.4.2276 (#6393)

* vim-patch:7.4.2276

Problem:    Command line test fails on Windows when run twice.
Solution:   Wipe the buffer so that the directory can be deleted.

1773ddfdcd

* version.c: mark vim-patch 7.4.2269 as included (#5659)

src/nvim/version.c

@@ -165,14 +165,14 @@ static int included_patches[] = {
   2279,
   // 2278 NA
   2277,
-  // 2276,
+  2276,
   2275,
   2274,
   2273,
   2272,
   // 2271 NA
   // 2270 NA
-  // 2269,
+  2269,
   // 2268,
   // 2267 NA
   2266,