vim-patch:8.0.0031 (#7050)

Problem:    After ":bwipeout" 'fileformat' is not set to the right default.
Solution:   Get the default from 'fileformats'. (Mike Williams)

e8ef3a0934

src/nvim/version.c

@@ -698,7 +698,7 @@ static const int included_patches[] = {
   // 34,
   33,
   32,
-  // 31,
+  31,
   // 30 NA
   // 29 NA
   // 28 NA