updated for version 7.4.525

Problem:    map() leaks memory when there is an error in the expression.
Solution:   Call clear_tv(). (Christian Brabandt)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    525,
 /**/
     524,
 /**/