vim-patch:7.4.606 #2594

Problem:    May crash when using a small window.
Solution:   Avoid dividing by zero. (Christian Brabandt)

https://github.com/vim/vim/commit/v7-4-606

src/nvim/version.c

@@ -177,7 +177,7 @@ static int included_patches[] = {
   //609,
   //608,
   //607,
-  //606,
+  606,
   //605,
   //604,
   //603,