updated for version 7.4.040

Problem:    Valgrind error on exit when a script-local variable holds a
            reference to the scope of another script.
Solution:   First clear all variables, then free the scopes. (ZyX)

src/version.c

@@ -738,6 +738,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    40,
 /**/
     39,
 /**/