There is no need to call $this->msg() directly for the fieldset legend
as there is already a method in HTMLForm to do it.
Change-Id: I771520ea230301b51cece685f47e6a606ad860be
$form = new HTMLForm( $this->fields, $this->getContext(), $this->getMessagePrefix() );
$form->setSubmitCallback( array( $this, 'onSubmit' ) );
- $form->setWrapperLegend( $this->msg( $this->getMessagePrefix() . '-legend' ) );
+ $form->setWrapperLegendMsg( $this->getMessagePrefix() . '-legend' );
$form->addHeaderText(
$this->msg( $this->getMessagePrefix() . '-text' )->parseAsBlock() );