<rdar://problem/5436617> Favicons sometimes don't show up even when they are

    <rdar://problem/5436617> Favicons sometimes don't show up even when they are
        in the database
        - A client can try to retain an icon for a page before the database is actually
        opened.  Since isOpened() is not a requirement to retain an icon, remove the check
        for that.  Instead, we'll check to make sure whether this database is enabled
        before proceeding.

        Reviewed by Brady.

        * loader/icon/IconDatabase.cpp:
        (WebCore::IconDatabase::retainIconForPageURL):
        (WebCore::IconDatabase::releaseIconForPageURL): only check isOpen() before we
        schedule for a sync.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@26068 268f45cc-cd09-0410-ab3c-d52691b4dbfc