undefined page_id boost_expire_node

Hello!
I have "Notice: Undefined index: page_id in boost_expire_node()" in boost.module file
Besides a lot of other notices in this module I was confused with this

$GLOBALS['_boost_router_item'] = isset($GLOBALS['_boost_router_item']) ? $GLOBALS['_boost_router_item'] : _boost_get_menu_router();
$router_item = $GLOBALS['_boost_router_item'];

after that $router_item['page_id'] is used without any conditions for isset, so I assume function _boost_get_menu_router() should always return array with index 'page_id', but it's not

take a look on my menu item in hook_menu

  $items['user/profile'] = array(
    'title' => 'mymenuitemtitle',
    'page callback' => 'mypagecallback',
    'access arguments' => array('has account'),
    'type' => MENU_CALLBACK,
    'weight' => -49,
    'file' => 'mymodule.pages.inc',
  );

so in function _boost_get_menu_router() menu_get_item called at the beginning
and after 'page_id' added in following cases:

• this is node page
• this is taxonomy page
• this is user page
• this is view page
• this is panel

in other cases there won't any "page_id" in array

I made patch from netbeans in attachments. It doesn't contains path to file, so you should use it directly