patch 7.4.1399
Problem:    The MS-DOS code does not build.
Solution:   Remove the old MS-DOS code.
diff --git a/src/syntax.c b/src/syntax.c
index 2dd5465..b385d1a 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -8055,7 +8055,7 @@
     void
 restore_cterm_colors(void)
 {
-#if defined(MSDOS) || (defined(WIN3264) && !defined(FEAT_GUI_W32))
+#if defined(WIN3264) && !defined(FEAT_GUI_W32)
     /* Since t_me has been set, this probably means that the user
      * wants to use this as default colors.  Need to reset default
      * background/foreground colors. */