patch 8.2.4309: Vim9: crash when using a partial in the wrong context

Problem:    Vim9: crash when using a partial in the wrong context.
Solution:   Don't use an NULL outer pointer. (closes #9706)
diff --git a/src/version.c b/src/version.c
index 4c48d5f..37d653d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4309,
+/**/
     4308,
 /**/
     4307,