patch 8.2.3771: Vim9: accessing freed memory when checking type

Problem:    Vim9: accessing freed memory when checking type.
Solution:   Make a copy of a function type.
diff --git a/src/version.c b/src/version.c
index 5db7dca..9b927f2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -754,6 +754,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3771,
+/**/
     3770,
 /**/
     3769,