patch 8.2.2600: Vim9: crash when putting an unknown type in a dictionary

Problem:    Vim9: crash when putting an unknown type in a dictionary.
            (Yegappan Lakshmanan)
Solution:   Handle a NULL type pointer.
diff --git a/src/version.c b/src/version.c
index 9a4fa46..72d38783 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2600,
+/**/
     2599,
 /**/
     2598,