patch 8.2.0084: complete item "user_data" can only be a string

Problem:    Complete item "user_data" can only be a string.
Solution:   Accept any type of variable. (closes #5412)
diff --git a/src/proto/dict.pro b/src/proto/dict.pro
index 3185edc..75519a4 100644
--- a/src/proto/dict.pro
+++ b/src/proto/dict.pro
@@ -18,18 +18,20 @@
 int dict_add_string(dict_T *d, char *key, char_u *str);
 int dict_add_string_len(dict_T *d, char *key, char_u *str, int len);
 int dict_add_list(dict_T *d, char *key, list_T *list);
+int dict_add_tv(dict_T *d, char *key, typval_T *tv);
 int dict_add_callback(dict_T *d, char *key, callback_T *cb);
 void dict_iterate_start(typval_T *var, dict_iterator_T *iter);
 char_u *dict_iterate_next(dict_iterator_T *iter, typval_T **tv_result);
 int dict_add_dict(dict_T *d, char *key, dict_T *dict);
 long dict_len(dict_T *d);
 dictitem_T *dict_find(dict_T *d, char_u *key, int len);
+int dict_get_tv(dict_T *d, char_u *key, typval_T *rettv);
 char_u *dict_get_string(dict_T *d, char_u *key, int save);
 varnumber_T dict_get_number(dict_T *d, char_u *key);
 varnumber_T dict_get_number_def(dict_T *d, char_u *key, int def);
 varnumber_T dict_get_number_check(dict_T *d, char_u *key);
 char_u *dict2string(typval_T *tv, int copyID, int restore_copyID);
-int dict_get_tv(char_u **arg, typval_T *rettv, int evaluate, int literal);
+int eval_dict(char_u **arg, typval_T *rettv, int evaluate, int literal);
 void dict_extend(dict_T *d1, dict_T *d2, char_u *action);
 dictitem_T *dict_lookup(hashitem_T *hi);
 int dict_equal(dict_T *d1, dict_T *d2, int ic, int recursive);