updated for version 7.4.660

Problem:    Using freed memory when g:colors_name is changed in the colors
            script. (oni-link)
Solution:   Make a copy of the variable value.

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    660,
 /**/
     659,
 /**/