patch 8.2.3728: internal error when passing range() to list2blob()

Problem:    Internal error when passing range() to list2blob().
Solution:   Materialize the list first. (closes #9262)

src/blob.c

@@ -526,6 +526,7 @@ f_list2blob(typval_T *argvars, typval_T *rettv)
     if (l == NULL)
 	return;
 
+    CHECK_LIST_MATERIALIZE(l);
     FOR_ALL_LIST_ITEMS(l, li)
     {
 	int		error;