WIP exec_cmd_line()

+ fix error handle in redirections()
+ rename ft_free_cmd_arr() to free_pipeline()
+ "char **path" added to "struct t_all"
+ misc

srcs/builtins/exit.c

@@ -36,7 +36,7 @@ int	builtin_exit(int argc, char *argv[], t_all *c) // WIP
 				return (ft_reti_print(2, " numeric argument required\n", 2));
 			}
 		}
-	status = ft_atoi(argv[1]);
+		status = ft_atoi(argv[1]);
 	}
 	return (free_exit(c, status));
 }