patch 8.2.4526: Vim9: cannot set variables to a null value
Problem: Vim9: cannot set variables to a null value.
Solution: Add null_list, null_job, etc.
diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index 8be5885..49dc65b 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -42,6 +42,7 @@
void eval_addblob(typval_T *tv1, typval_T *tv2);
int eval_addlist(typval_T *tv1, typval_T *tv2);
int eval_leader(char_u **arg, int vim9);
+int handle_predefined(char_u *s, int len, typval_T *rettv);
int check_can_index(typval_T *rettv, int evaluate, int verbose);
void f_slice(typval_T *argvars, typval_T *rettv);
int eval_index_inner(typval_T *rettv, int is_range, typval_T *var1, typval_T *var2, int exclusive, char_u *key, int keylen, int verbose);