PVS-Studio warning V501 for LibRaw

void DHT::hide_hots() {
  ....
  for (int k = -2; k < 3; k += 2)
    for (int m = -2; m < 3; m += 2)
      if (m == 0 && m == 0)
        continue;
      else
        avg += nraw[nr_offset(y + k, x + m)][kc];

  ....
}

This suspicious code was found in LibRaw project by PVS-Studio static code analyzer.
Warning message is:
V501 There are identical sub-expressions to the left and to the right of the '&&' operator: m == 0 && m == 0 dht_demosaic.cpp 260

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/