patch 8.2.3064: Vim9: in script cannot set item in uninitialized list

Problem:    Vim9: in script cannot set item in uninitialized list.
Solution:   When a list is NULL allocate an empty one. (closes #8461)
diff --git a/src/version.c b/src/version.c
index 1238a49..12f6648 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3064,
+/**/
     3063,
 /**/
     3062,