[d-torrance]

Without it, we fail with the following:

In file included from ../../../../fflas-ffpack/interfaces/libs/ffpack_inst.C:38:
In file included from ../../../../fflas-ffpack/ffpack/ffpack.h:45:
In file included from ../../../../fflas-ffpack/fflas/fflas.h:131:
In file included from ../../../../fflas-ffpack/fflas/fflas_fscal_mp.inl:30:
In file included from ../../../../fflas-ffpack/field/rns-integer.h:36:
In file included from ../../../../fflas-ffpack/field/rns-double.h:466:
../../../../fflas-ffpack/field/rns-double-recint.inl:142:18: error: no member named 'terminate' in namespace 'std'
  142 |             std::terminate();
      |                  ^~~~~~~~~