fix: invalid syntax error cause shown when there was no token following a redirection

src/errors/errors.c

@@ -6,7 +6,7 @@
 /*   By: sede-san <sede-san@student.42madrid.com    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2026/02/10 22:22:06 by sede-san          #+#    #+#             */
-/*   Updated: 2026/02/11 02:30:32 by sede-san         ###   ########.fr       */
+/*   Updated: 2026/02/12 02:55:36 by sede-san         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -18,9 +18,10 @@ void	syntax_error_unexpected_token(
 {
 	char	*cause;
 
-	cause = token->value;
 	if (token == NULL)
 		cause = "newline";
+	else
+		cause = token->value;
 	ft_eprintf("minishell: syntax error near unexpected token `%s'\n", cause);
 }