patch 7.4.1464

Problem:    When the argument of sort() is zero or empty it fails.
Solution:   Make zero work as documented. (suggested by Yasuhiro Matsumoto)

src/version.c

@@ -743,6 +743,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1464,
 /**/
     1463,
 /**/