PVS-Studio warning V576 for SteamworksSDK

typedef uint32 AccountID_t;
AccountID_t GetAccountID() const;

void CP2PAuthPlayer::OnBeginAuthResponse()
{
  ....
  sprintf( rgch,
           "P2P:: Received steam response for account=%d\n",
           m_steamID.GetAccountID() );
  ....
}

This suspicious code was found in SteamworksSDK project by PVS-Studio static code analyzer.
Warning message is:
V576 Incorrect format. Consider checking the third actual argument of the 'sprintf' function. The SIGNED integer type argument is expected. p2pauth.cpp 111

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