patch 7.4.2305

Problem:    Marks, writefile and nested function tests are old style.
Solution:   Turn them into new style tests. (Yegappan Lakshmanan)

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2305,
 /**/
     2304,
 /**/