patch 9.0.0334: test does not properly clean up

Problem:    Test does not properly clean up.
Solution:   Fix typo in argument of delete(). (Dominique Pellé, closes #11010)

src/version.c

@@ -707,6 +707,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    334,
 /**/
     333,
 /**/