patch 8.2.0489: Vim9: memory leaks

Problem:    Vim9: memory leaks.
Solution:   Free memory in the right place.  Add hints for using asan.
diff --git a/src/version.c b/src/version.c
index 58180ac..43f9e59 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    489,
+/**/
     488,
 /**/
     487,