patch 8.2.3267: Vim9: crash when disassembling using deleted script variable

Problem:    Vim9: crash when disassembling a function that uses a deleted
            script variable.
Solution:   Check the variable still exists. (closes #8683)

src/version.c

@@ -755,6 +755,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3267,
 /**/
     3266,
 /**/