this.fieldMap.get(key).$$optionMap 增加undefined检查

[applerao]

报错信息：

Uncaught (in promise) TypeError: Cannot read property '$$optionMap' of undefined
at t.value (0.bundle.min.js:formatted:21485)
at 0.bundle.min.js:formatted:21473
at Array.forEach ()
at t.value (0.bundle.min.js:formatted:21472)
at t.value (0.bundle.min.js:formatted:21449)
at p.updateComponent (vendor.min.js:4)
at p.receiveComponent (vendor.min.js:4)
at Object.receiveComponent (vendor.min.js:1)
at Object.updateChildren (vendor.min.js:4)
at h._reconcilerUpdateChildren (vendor.min.js:5)

定位问题：

innerTable.js Line 154 if(this.fieldMap.get(key).$$optionMap) 需要增加undefined检查，如：
if (this.fieldMap.get(key) && this.fieldMap.get(key).$$optionMap)