fix: syntax error on pipe at start was not being detected

src/parser/parser.c

@@ -80,6 +80,8 @@ static t_list *parse_tokens(
 		return (NULL);
 	commands = NULL;
 	current_token = tokens;
+	if (((t_token *)current_token->content)->type == TOKEN_PIPE)
+		return (syntax_error_unexpected_token((t_token *)current_token->content), NULL);
 	while (current_token != NULL)
 	{
 		command = command_new(&current_token);