vim-patch:7.4.2123

Problem:    No new style test for diff mode.
Solution:   Add a test.  Check that folds are in sync.

42093c0ec5

src/nvim/version.c

@@ -317,7 +317,7 @@ static int included_patches[] = {
   // 2126,
   // 2125,
   // 2124,
-  // 2123,
+  2123,
   // 2122 NA
   // 2121,
   // 2120,