PVS-Studio warning V501 for Firefox

bool
nsHTMLCSSUtils::IsCSSEditableProperty(....)
{
  ....
  if (aAttribute && aAttribute->EqualsLiteral("align") &&
      (nsEditProperty::ul == tagName                       <<<===
       || nsEditProperty::ol == tagName
       || nsEditProperty::dl == tagName
       || nsEditProperty::li == tagName
       || nsEditProperty::dd == tagName
       || nsEditProperty::dt == tagName
       || nsEditProperty::address == tagName
       || nsEditProperty::pre == tagName
       || nsEditProperty::ul == tagName)) {                <<<===
    return true;
  }
  ....
}

This suspicious code was found in Firefox project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions 'nsEditProperty::ul == tagName' to the left and to the right of the '||' operator. nshtmlcssutils.cpp 432

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/