PVS-Studio warning V570 for Quake3

void CG_ParticleSnowFlurry (qhandle_t pshader, centity_t *cent)
{
  ...
  p->org[0] = p->org[0];
  p->org[1] = p->org[1];
  p->org[2] = p->org[2];
  ...
}

This suspicious code was found in Quake3 project by PVS-Studio static code analyzer.
Warning message is:
V570 The 'p->org[0]' variable is assigned to itself. cgame cg_marks.c 1267

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/