PVS-Studio warning V501 for Notepad++

bool _isPointXValid;
bool _isPointYValid;

bool isPointValid() {
  return _isPointXValid && _isPointXValid;
};

This suspicious code was found in Notepad++ project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions to the left and to the right of the '&&' operator: _isPointXValid && _isPointXValid

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/