PVS-Studio warning V522 for blender

static int render_new_particle_system(....)
{
  ParticleSettings *part, *tpart=0;
  ...
  // tpart don't used
  ...
  psys_particle_on_emitter(psmd,tpart->from,tpa->num,
    pa->num_dmcache,tpa->fuv,tpa->foffset,
    co,nor,0,0,sd.orco,0);
  ...
}

This suspicious code was found in blender project by PVS-Studio static code analyzer.
Warning message is:
V522 Dereferencing of the null pointer 'tpart' might take place. bf_render convertblender.c 1788

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/