更改 tooltip -> axisPointer -> type 从任意不为 ‘none’ 更改为 ‘none’ 会报错

[neewbee]

Version

4.1.0-release

Steps to reproduce

const options = {
        title: {
          text: '堆叠区域图'
        },
        tooltip : {
          trigger: 'axis',
          axisPointer: {
            type: 'line',
            label: {
              backgroundColor: '#6a7985'
            }
          }
        },
        legend: {
          data:['邮件营销','联盟广告','视频广告','直接访问','搜索引擎']
        },
        toolbox: {
          feature: {
            saveAsImage: {}
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis : [
          {
            type : 'category',
            boundaryGap : false,
            data : ['周一','周二','周三','周四','周五','周六','周日']
          }
        ],
        yAxis : [
          {
            type : 'value'
          }
        ],
        series : [
          {
            name:'邮件营销',
            type:'line',
            stack: '总量',
            areaStyle: {},
            data:[120, 132, 101, 134, 90, 230, 210]
          },
          {
            name:'联盟广告',
            type:'line',
            stack: '总量',
            areaStyle: {},
            data:[220, 182, 191, 234, 290, 330, 310]
          },
          {
            name:'视频广告',
            type:'line',
            stack: '总量',
            areaStyle: {},
            data:[150, 232, 201, 154, 190, 330, 410]
          },
          {
            name:'直接访问',
            type:'line',
            stack: '总量',
            areaStyle: {normal: {}},
            data:[320, 332, 301, 334, 390, 330, 320]
          },
          {
            name:'搜索引擎',
            type:'line',
            stack: '总量',
            label: {
              normal: {
                show: true,
                position: 'top'
              }
            },
            areaStyle: {normal: {}},
            data:[820, 932, 901, 934, 1290, 1330, 1320]
          }
        ]
      };
myChar.setOption(options);

setTimeout(() => {
  myChar.setOption({...options,
      tooltip: {
        trigger: 'axis',
        axisPointer: {
          type: 'none',
          lineStyle: {
            type: 'dashed'
          }
        }
      }
    });
}, 1000)

What is expected?

x 轴指示器 消失

What is actually happening?

报错

error stack

TypeError: Cannot read property 'style' of undefined
ExtendedClass.updatePointerEl
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:67793:43
ExtendedClass.render
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:67697:12
updateAxisPointer
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:37078:87
ExtendedClass.updateAxisPointer
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:37049:5
callView
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:6794:57
each
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:368:9
updateDirectly
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:6766:5
ECharts.<anonymous>
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:6970:7
each
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:368:9
ECharts.doDispatchAction
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:6957:3
ECharts.flushPendingActions
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:7006:22
ECharts.echartsProto.dispatchAction
http://10.10.165.159:3000/dll_dev23648ccda01d3de14fbb.js:6929:23
(anonymous function)

---

业务场景是鼠标移出后，折线图最新一个点的tooltip能显示出来

[echarts-bot]

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