fix for previous commit

fulcrm_shoppingcart.module

@@ -678,7 +678,7 @@ function fulcrm_shoppingcart_buy_eventbookingtype_form( $form, &$form_state, $pe
 
     if ( count( $form[ 'ticket_for_persons' ][ '#options' ] ) == 1 ) {
         foreach ( $form[ 'ticket_for_persons' ][ '#options' ] as $k => $v )
-            $form[ 'ticket_for_persons' ][ '#default_value' ] = $k;
+            $form[ 'ticket_for_persons' ][ '#default_value' ] = array( $k => $k );
     }
 
     $form[ 'eventslots' ] = array();