PVS-Studio warning V557 for IPP Samples

typedef struct
{
  ...
  VM_ALIGN16_DECL(Ipp32f)
    nb_short[2][3][__ALIGNED(MAX_PPT_SHORT)];
  ...
} mpaPsychoacousticBlock;

static void mp3encPsy_short_window(....)
{
  ...
  if (win_counter == 0) {
    nb_s = pBlock->nb_short[0][3];
  }
  ...
}

This is what should have been written here: 2.

This suspicious code was found in IPP Samples project by PVS-Studio static code analyzer.
Warning message is:
V557 Array overrun is possible. The '3' index is pointing beyond array bound. mp3_enc mp3enc_psychoacoustic_fp.c 726

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/