PVS-Studio warning V521 for Lugaru

Person::Person()
{
  ...
  bleeding = 0;
  bleedx = 0,bleedy;
  direction = 0;
  ...
}

This is what should have been written here: bleedy = 0;

This suspicious code was found in Lugaru project by PVS-Studio static code analyzer.
Warning message is:
V521 Such expressions using the ',' operator are dangerous. Make sure the expression 'bleedx = 0, bleedy' is correct. Lugaru person.cpp 7815

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/