human
Solve the following python programming problem given the following code:
def cmd_list_next(cfg, args) : 
    '
    Generates a list of all user-defined next stable versions and prints them
    to the stdout.
    ' 
    next_store = KVStore (NEXT_STORE_FILE) 
    repo_info = get_repo_info () 
    last_tag = repo_info ['last-tag'] 
    has_next_custom = next_store.has (last_tag) 
    if (not next_store.empty ()) : 
        def print_item(k, v) : 
            term.out ((('    %s => %s' % (term.tag (k), term.next (v))) + (' (*)' if (k == last_tag) else ''))) 
term.out ('Currently set NEXT custom strings (*=most recent and reachable tag):') 
        for (tag, vstring) in sorted (next_store.items ()) : 
            print_item (tag, last_tag) 
if (not has_next_custom) : 
            print_item (last_tag, '<undefined>') 
else : 
        term.out ('No NEXT custom strings set.') 

    
    

    Fix the buggy line: print_item (tag, last_tag)
assistant
#Here is Python program to fix the buggy line: print_item (tag, last_tag)
.

print_item (tag, vstring)