PVS-Studio warning V595 for PushFramework

void Dispatcher::processFirstPacket(....)
{
  ....
  std::string clientKey = pClient->getKey();
  ....
  if(pClient)
  ....
}

This suspicious code was found in PushFramework project by PVS-Studio static code analyzer.
Warning message is:
V595 The 'pClient' pointer was utilized before it was verified against nullptr. Check lines: 244, 250. dispatcher.cpp 244

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/