patch 7.4.2110

Problem:    When there is an CmdUndefined autocmd then the error for a missing
            command is E464 instead of E492. (Manuel Ortega)
Solution:   Don't let the pointer be NULL.

src/version.c

@@ -758,6 +758,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2110,
 /**/
     2109,
 /**/