引擎版本 1.6.2
一个节点下挂10个以上脚本时，修改第10个脚本的参数会报错
TypeError: Cannot read property ‘value’ of null
at infos.forEach.t (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/builtin/inspector/panel/data.js:1:2357)
at Array.forEach (native)
at Object.exports.change (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/builtin/inspector/panel/data.js:1:2287)
at ui-panel-frame.setProp (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/builtin/inspector/panel/index.js:1:11619)
at Object.DomUtils.fire (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor-framework/lib/renderer/ui/utils/dom-utils.js:1:2021)
at ui-panel-frame.t [as _onChange] (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor/builtin/inspector/panel/index.js:1:5065)
at Object.DomUtils.fire (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor-framework/lib/renderer/ui/utils/dom-utils.js:1:2021)
at ui-prop._emitChange (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor-framework/lib/renderer/ui/elements/prop.js:1:6261)
at ui-num-input.t.addEventListener (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor-framework/lib/renderer/ui/elements/prop.js:1:5149)
at Object.DomUtils.fire (/Applications/CocosCreator.app/Contents/Resources/app.asar/editor-framework/lib/renderer/ui/utils/dom-utils.js:1:2021)
