PVS-Studio warning V547 for Prime95

typedef UINT_PTR SOCKET;

SOCKET socket(__in int af, __in int type,
              __in int protocol);

int pnHttpServer (char *pbuf, unsigned cbuf, char* postargs)
{
  ....
  if ((s = socket (hp->h_addrtype, SOCK_STREAM, 0)) < 0) {
  ....
}

This suspicious code was found in Prime95 project by PVS-Studio static code analyzer.
Warning message is:
V547 Expression '(s = socket(hp->h_addrtype, 1, 0)) < 0' is always false. Unsigned type value is never < 0. prime95 primenet.c 354

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