PVS-Studio warning V663 for Poco

void IniFileConfiguration::load(std::istream& istr)
{
  _map.clear();
  _sectionKey.clear();
  while (!istr.eof())
  {
    parseLine(istr);
  }
}

This suspicious code was found in Poco project by PVS-Studio static code analyzer.
Warning message is:
V663 Infinite loop is possible. The 'cin.eof()' condition is insufficient to break from the loop. Consider adding the 'cin.fail()' function call to the conditional expression. Util inifileconfiguration.cpp 86

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