PVS-Studio warning V614 for TPP

double mscore_c::dot_hr(unsigned long *_v)
{
  ...
  int iSeqSize;
  //perform a single pass through each array.
  //check every point in m_pfSeq,
  //but don't revisit positions in m_vmiType
  for (int a = 0; a < iSeqSize; a++) {
  ...
}

This suspicious code was found in TPP project by PVS-Studio static code analyzer.
Warning message is:
V614 Uninitialized variable 'iSeqSize' used. xtandem mscore_c.cpp 552

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/