PVS-Studio warning V610 for webrtc

int32_t
RTCPSender::BuildREMB(uint8_t* rtcpbuffer, uint32_t& pos)
{
  ....
  for(uint32_t i=0; i<64; i++)
  {
    if(_rembBitrate <= ((uint32_t)262143 << i))
    {
      brExp = i;
      break;
    }
  }
  ....
}

This suspicious code was found in webrtc project by PVS-Studio static code analyzer.
Warning message is:
V610 Undefined behavior. Check the shift operator '<<. The right operand ('i' = [0..63]) is greater than or equal to the length in bits of the promoted left operand. rtcp_sender.cc 1105

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/