patch 8.1.1539: not easy to define a variable and lock itv8.1.1539

Problem:    Not easy to define a variable and lock it.
Solution:   Add ":const".

1 files changed, 1 insertions, 0 deletions

diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index f501300a3..5e800adc8 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -28,6 +28,7 @@ void *call_func_retstr(char_u *func, int argc, typval_T *argv);
 void *call_func_retlist(char_u *func, int argc, typval_T *argv);
 int eval_foldexpr(char_u *arg, int *cp);
 void ex_let(exarg_T *eap);
+void ex_const(exarg_T *eap);
 void list_hashtable_vars(hashtab_T *ht, char *prefix, int empty, int *first);
 char_u *get_lval(char_u *name, typval_T *rettv, lval_T *lp, int unlet, int skip, int flags, int fne_flags);
 void clear_lval(lval_T *lp);