PVS-Studio warning V576 for Cocos2d-x

#ifdef UNICODE
#define gai_strerror   gai_strerrorW            //<==
#else
#define gai_strerror   gai_strerrorA
#endif  /* UNICODE */

bool Console::listenOnTCP(int port)
{
  ....
  fprintf(stderr,"net_listen error for %s: %s", //<==
    serv, gai_strerror(n));                     //<==
  ....
}

This suspicious code was found in Cocos2d-x project by PVS-Studio static code analyzer.
Warning message is:
V576 Incorrect format. Consider checking the fourth actual argument of the 'fprintf' function. The pointer to string of char type symbols is expected. ccconsole.cpp 341

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/