patch 8.2.2268: Vim9: list unpack seen as declaration

Problem:    Vim9: list unpack seen as declaration.
Solution:   Check for "var". (closes #7594)
diff --git a/src/version.c b/src/version.c
index 1c5c6b3..76a9b4e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2268,
+/**/
     2267,
 /**/
     2266,