message: Update fe.cpp
  "d2shape_z" is misspelled on line 8034. Causes compile issues for thread safe mode only.
diff: @@ -8031,7 +8031,7 @@ void H1_HexahedronElement::CalcHessian(const IntegrationPoint &ip,
  #ifdef MFEM_THREAD_SAFE
  Vector shape_x(p+1), shape_y(p+1), shape_z(p+1);
  Vector dshape_x(p+1), dshape_y(p+1), dshape_z(p+1);
  - Vector d2shape_x(p+1), d2shape_y(p+1), ds2hape_z(p+1);
  + Vector d2shape_x(p+1), d2shape_y(p+1), d2shape_z(p+1);
  #endif
  basis1d.Eval(ip.x, shape_x, dshape_x, d2shape_x);
  