patch 8.2.1846: Vim9: block variables are not found in compiled function

Problem:    Vim9: variables declared in a local block are not found in
            when a function is compiled.
Solution:   Look for script variables in sn_all_vars.
diff --git a/src/proto/vim9script.pro b/src/proto/vim9script.pro
index 30eb86a..5b83f12 100644
--- a/src/proto/vim9script.pro
+++ b/src/proto/vim9script.pro
@@ -5,11 +5,11 @@
 void ex_export(exarg_T *eap);
 void free_imports_and_script_vars(int sid);
 void ex_import(exarg_T *eap);
-int find_exported(int sid, char_u *name, ufunc_T **ufunc, type_T **type);
+int find_exported(int sid, char_u *name, ufunc_T **ufunc, type_T **type, cctx_T *cctx);
 char_u *handle_import(char_u *arg_start, garray_T *gap, int import_sid, evalarg_T *evalarg, void *cctx);
 char_u *vim9_declare_scriptvar(exarg_T *eap, char_u *arg);
 void add_vim9_script_var(dictitem_T *di, typval_T *tv, type_T *type);
-void hide_script_var(scriptitem_T *si, svar_T *sv);
+void hide_script_var(scriptitem_T *si, int idx);
 void free_all_script_vars(scriptitem_T *si);
 svar_T *find_typval_in_script(typval_T *dest);
 int check_script_var_type(typval_T *dest, typval_T *value, char_u *name);