message: Avoid unnecesary instance creation in assignBackboneHydrogenBonds
diff: @@ -217,11 +217,11 @@ void SecondaryStructureAssigner::assignBackboneHydrogenBonds()
  int n = m_hBonds.size();
  for (unsigned int i = 0; i < n; ++i) {
  auto recordI = m_hBonds[i];
  - auto residueI = m_molecule->residue(recordI->residue);
  + const Residue& residueI = m_molecule->residue(recordI->residue);
  for (unsigned int j = i + 1; j < n; ++j) {
  auto recordJ = m_hBonds[j];
  - auto residueJ = m_molecule->residue(recordJ->residue);
  + const Residue& residueJ = m_molecule->residue(recordJ->residue);
  // skip if we're not on the same chain
  if (residueI.chainId() != residueJ.chainId())
  