patch 8.1.1583: set_ref_in_list() only sets ref in items

Problem:    Set_ref_in_list() only sets ref in items.
Solution:   Rename to set_ref_in_list_items() to avoid confusion.
diff --git a/src/proto/eval.pro b/src/proto/eval.pro
index 5e800ad..7831eb5 100644
--- a/src/proto/eval.pro
+++ b/src/proto/eval.pro
@@ -50,7 +50,9 @@
 int get_copyID(void);
 int garbage_collect(int testing);
 int set_ref_in_ht(hashtab_T *ht, int copyID, list_stack_T **list_stack);
-int set_ref_in_list(list_T *l, int copyID, ht_stack_T **ht_stack);
+int set_ref_in_dict(dict_T *d, int copyID);
+int set_ref_in_list(list_T *ll, int copyID);
+int set_ref_in_list_items(list_T *l, int copyID, ht_stack_T **ht_stack);
 int set_ref_in_item(typval_T *tv, int copyID, ht_stack_T **ht_stack, list_stack_T **list_stack);
 char_u *echo_string_core(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID, int echo_style, int restore_copyID, int composite_val);
 char_u *echo_string(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID);