fix npes

src/vs/workbench/browser/parts/editor/editorStatus.ts

@@ -661,7 +661,7 @@ export class EditorStatus implements IStatusbarItem {
 		const activeEditor = this.editorService.getActiveEditor();
 		if (activeEditor) {
 			const activeResource = toResource(activeEditor.input, { supportSideBySide: true, filter: ['file', 'untitled'] });
-			if (activeResource.toString() === resource.toString()) {
+			if (activeResource && activeResource.toString() === resource.toString()) {
 				return this.onEncodingChange(<IBaseEditor>activeEditor); // only update if the encoding changed for the active resource
 			}
 		}

src/vs/workbench/common/editor/editorStacksModel.ts

@@ -198,7 +198,7 @@ export class EditorGroup implements IEditorGroup {
 		for (let i = 0; i < this.editors.length; i++) {
 			const editor = this.editors[i];
 			const editorResource = toResource(editor, { supportSideBySide: true });
-			if (editorResource.toString() === resource.toString()) {
+			if (editorResource && editorResource.toString() === resource.toString()) {
 				return editor;
 			}
 		}