patch 8.2.0823: Vim9: script reload test is disabled

Problem:    Vim9: script reload test is disabled.
Solution:   Compile a function in the context of the script where it was
            defined.  Set execution stack for compiled function.  Add a test
            that an error is reported for the right file/function.
diff --git a/src/proto/scriptfile.pro b/src/proto/scriptfile.pro
index 111e855..e2a2671 100644
--- a/src/proto/scriptfile.pro
+++ b/src/proto/scriptfile.pro
@@ -1,7 +1,8 @@
 /* scriptfile.c */
 void estack_init(void);
 estack_T *estack_push(etype_T type, char_u *name, long lnum);
-void estack_push_ufunc(etype_T type, ufunc_T *ufunc, long lnum);
+void estack_push_ufunc(ufunc_T *ufunc, long lnum);
+int estack_top_is_ufunc(ufunc_T *ufunc, long lnum);
 void estack_pop(void);
 char_u *estack_sfile(void);
 void ex_runtime(exarg_T *eap);