...where it produced false positive

> /Users/stephan/Software/lo2/core/UnoControls/source/controls/progressmonitor.cxx:245:21: error: do not call operator== on a std container containing a unique_ptr const class std::__1::__wrap_iter<class std::__1::unique_ptr<struct unocontrols::IMPL_TextlistItem, struct std::__1::default_delete<struct unocontrols::IMPL_TextlistItem> > *> [loplugin:ptrvector]
>             if (itr != maTextlist_Top.end())
>                     ^

Change-Id: I8a8b6f30145e6aff2caa03c03f0fd20af0ba42b5
Reviewed-on: https://gerrit.libreoffice.org/59181
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>