fix of #433

Author: AJIXuMuK

src/controls/iFrameDialog/IFrameDialogContent.tsx

@@ -40,6 +40,8 @@ export class IFrameDialogContent extends React.Component<IIFrameDialogContentPro
         try { // for cross origin requests we can have issues with accessing frameElement
             this._iframe.contentWindow.frameElement.cancelPopUp = this.props.close;
             this._iframe.contentWindow.frameElement.commitPopUp = this.props.close;
+            // SP.UI.Dialog has misspelling of commitPopUp
+            this._iframe.contentWindow.frameElement.commitPopup = this.props.close;
         }
         catch (err) {
             if (err.name !== 'SecurityError') {

src/controls/iFramePanel/IFramePanelContent.tsx

@@ -80,6 +80,9 @@ export class IFramePanelContent extends React.Component<IIFramePanelContentProps
   private iframeOnLoad = () => {
     try { // for cross origin requests we can have issues with accessing frameElement
       this._iframe.contentWindow.frameElement.cancelPopUp = this.props.close;
+      this._iframe.contentWindow.frameElement.commitPopUp = this.props.close;
+      // SP.UI.Dialog has misspelling of commitPopUp
+      this._iframe.contentWindow.frameElement.commitPopup = this.props.close;
     }
     catch (err) {
       if (err.name !== 'SecurityError') {