Backlog の妙な改行を止める

backlog_kag.menu.js

displayLog: function() {
    var that = this;
    this.kag.stat.is_skip = false;
    var j_save = $("<div></div>");
    this.kag.html("backlog", {
        "novel": $.novel
    }, function(html_str) {
        var j_menu = $(html_str);
        var layer_menu = that.kag.layer.getMenuLayer();
        layer_menu.empty();
        layer_menu.append(j_menu);
        layer_menu.find(".display_menu").click(function() {
            layer_menu.hide();
            if (that.kag.stat.visible_menu_button == true) $(".button_menu").show()
        });
        var log_str = "";
        var array_log = that.kag.variable.tf.system.backlog;
        //for (var i = 0; i < array_log.length; i++) log_str += array_log[i] + "<br />";  //←コレを
        for (var i = 0; i < array_log.length; i++) log_str += array_log[i]; //←こうする
        layer_menu.find(".log_body").html(log_str);
        layer_menu.show();
        layer_menu.find(".log_body").scrollTop(9999999999);
        $(".button_menu").hide()
    })
},