message: implement suggestion
diff: @@ -1494,7 +1494,7 @@ PetscParMatrix * TripleMatrixProduct(PetscParMatrix *R, PetscParMatrix *A,
  " differs from number of local rows of P " << P->Height());
  MFEM_VERIFY(A->Height() == R->Width(),
  "Petsc TripleMatrixProduct: Number of local rows of A " << A->Height() <<
  - " differs from number of local rows of R " << R->Width());
  + " differs from number of local cols of R " << R->Width());
  Mat B;
  ierr = MatMatMatMult(*R,*A,*P,MAT_INITIAL_MATRIX,PETSC_DEFAULT,&B);
  PCHKERRQ(*R,ierr);
  