Conform to new react and typescript eslint rules

src/components/views/dialogs/BaseDialog.js

@@ -149,7 +149,7 @@ export default class BaseDialog extends React.Component {
                         'mx_Dialog_headerWithCancel': !!cancelButton,
                     })}>
                         <div className={classNames('mx_Dialog_title', this.props.titleClass)} id='mx_BaseDialog_title'>
-                            {headerImage}
+                            { headerImage }
                             { this.props.title }
                         </div>
                         { this.props.headerButton }