message: Update bilininteg_mass.cpp
diff: @@ -55,13 +55,13 @@ void MassIntegrator::SetupPA(const FiniteElementSpace &fes, const bool force)
  bool own_coeff{true};
  if (Q == nullptr)
  {
  - coeff = new Vector[1];
  + coeff = new Vector;
  coeff->SetSize(1);
  (*coeff)(0) = 1.0;
  }
  else if (ConstantCoefficient* cQ = dynamic_cast<ConstantCoefficient*>(Q))
  {
  - coeff = new Vector[1];
  + coeff = new Vector;
  coeff->SetSize(1);
  (*coeff)(0) = 1.0;
  }
  @@ -72,7 +72,7 @@ void MassIntegrator::SetupPA(const FiniteElementSpace &fes, const bool force)
  }
  else
  {
  - coeff = new Vector[1];
  + coeff = new Vector;
  coeff->SetSize(nq * ne);
  auto C = Reshape(coeff->HostWrite(), nq, ne);
  for (int e = 0; e < ne; ++e)
  