patch 7.4.789

Problem:    Using freed memory and crash. (Dominique Pellej)
Solution:   Correct use of pointers. (Hirohito Higashi)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    789,
 /**/
     788,
 /**/