PVS-Studio warning V614 for TPP

void MixtureModel::assessPeptideProperties(char* filename,
                               Boolean icat, Boolean glyc)
{
  ...
  double fval;
  ...
  // fval is not used
  ...
  if(! icat && strstr(pep, "C") != NULL && fval >= min_fval) {
  ...
}

This suspicious code was found in TPP project by PVS-Studio static code analyzer.
Warning message is:
V614 Uninitialized variable 'fval' used. tpplib mixturemodel.cxx 834

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