compile warnings

[cwsmith]

https://my.cdash.org/builds/3077614

*Warnings* (first 5 included)
SCOREC/src/MeshField_ShapeField.hpp line 137 (https://my.cdash.org/viewBuildError.php?type=1&buildid=3077761
/.../src/SCOREC/src/MeshField_ShapeField.hpp(137): warning #940-D: missing return statement at end of non-void function "MeshField::LinearAccessor<VtxAccessor>::operator() [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshF
}
    ^
          detected during:
            instantiation of "auto &MeshField::LinearAccessor<VtxAccessor>::operator()(int, int, int, MeshField::Mesh_Topology) const [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshFiel
        SCOREC/src/MeshField_ShapeField.hpp line 137 (https://my.cdash.org/viewBuildError.php?type=1&amp;buildid=3077761
/.../src/SCOREC/src/MeshField_ShapeField.hpp(137): warning #940-D: missing return statement at end of non-void function "MeshField::LinearAccessor<VtxAccessor>::operator() [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshF
}
    ^
          detected during:
            instantiation of "auto &MeshField::LinearAccessor<VtxAccessor>::operator()(int, int, int, MeshField::Mesh_Topology) const [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshFiel
        SCOREC/src/MeshField_ShapeField.hpp line 107 (https://my.cdash.org/viewBuildError.php?type=1&amp;buildid=3077761
/.../src/SCOREC/src/MeshField_ShapeField.hpp(107): warning #940-D: missing return statement at end of non-void function "MeshField::QuadraticAccessor<VtxAccessor, EdgeAccessor>::operator() [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<K
}
    ^
          detected during:
            instantiation of "auto &MeshField::QuadraticAccessor<VtxAccessor, EdgeAccessor>::operator()(int, int, int, MeshField::Mesh_Topology) const [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokk
        SCOREC/src/MeshField_ShapeField.hpp line 137 (https://my.cdash.org/viewBuildError.php?type=1&amp;buildid=3077761
/.../src/SCOREC/src/MeshField_ShapeField.hpp(137): warning #940-D: missing return statement at end of non-void function "MeshField::LinearAccessor<VtxAccessor>::operator() [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshF
}
    ^
          detected during:
            instantiation of "auto &MeshField::LinearAccessor<VtxAccessor>::operator()(int, int, int, MeshField::Mesh_Topology) const [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshFiel
        SCOREC/src/MeshField_ShapeField.hpp line 137 (https://my.cdash.org/viewBuildError.php?type=1&amp;buildid=3077761
/.../src/SCOREC/src/MeshField_ShapeField.hpp(137): warning #940-D: missing return statement at end of non-void function "MeshField::LinearAccessor<VtxAccessor>::operator() [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshF
}
    ^
          detected during:
            instantiation of "auto &MeshField::LinearAccessor<VtxAccessor>::operator()(int, int, int, MeshField::Mesh_Topology) const [with VtxAccessor=MeshField::Field<MeshField::KokkosSliceWrapper<Kokkos::View<MeshFiel