message: Fix a warning in ParGridFunction::GetValue and remove trailing
  whitespace in CHANGELOG.
diff: @@ -265,7 +265,7 @@ const
  DofVal.SetSize(dofs.Size());
  const FiniteElement *fe = fes->GetFE(i);
  MFEM_ASSERT(fe->GetMapType() == FiniteElement::VALUE, "invalid FE map type");
  - fes->GetFE(i)->CalcShape(ip, DofVal);
  + fe->CalcShape(ip, DofVal);
  GetSubVector(dofs, LocVec);
  }
  