[LIE/] Use explicit type for gravity_vec in HydroMechanicsLocalAssemblerFracture

ProcessLib/LIE/HydroMechanics/LocalAssembler/HydroMechanicsLocalAssemblerFracture-impl.h

@@ -196,8 +196,8 @@ void HydroMechanicsLocalAssemblerFracture<ShapeFunctionDisplacement,
     Eigen::MatrixXd const global2local_rotation =
         R.template topLeftCorner<ShapeFunctionPressure::DIM, GlobalDim>();
 
-    auto const& gravity_vec =
-        (global2local_rotation * _process_data.specific_body_force).eval();
+    DimVectorType const gravity_vec =
+        global2local_rotation * _process_data.specific_body_force;
 
     ParameterLib::SpatialPosition x_position;
     x_position.setElementID(_element.getID());

ProcessLib/LIE/HydroMechanics/LocalAssembler/HydroMechanicsLocalAssemblerFracture.h

@@ -99,6 +99,7 @@ private:
                                      GlobalDim>;
 
     using GlobalDimVector = Eigen::Matrix<double, GlobalDim, 1>;
+    using DimVectorType = typename ShapeMatricesTypePressure::DimVectorType;
 
     HydroMechanicsProcessData<GlobalDim>& _process_data;