vim-patch:7.4.446

Problem:    In some situations, when setting up an environment to trigger an
	    autocommand, the environment is not properly restored.
Solution:   Check the return value of switch_win() and call restore_win()
	    always.  (Daniel Hahler)

https://code.google.com/p/vim/source/detail?r=v7-4-446

src/nvim/version.c

@@ -299,7 +299,7 @@ static int included_patches[] = {
   449,
   //448 NA
   447,
-  //446,
+  446,
   //445,
   444,
   //443 NA