5083 avoid undefined order of operations in assignments

*** 933,944 ****
                  (*ldgp)->ldvp = *ldvp;
                  *ngrps += 1;
                  HXGE_DEBUG_MSG((NULL, INT_CTL, "==> hxge_ldgv_setup(done): "
                      "ldv %d endldg %d ldg %d, ldvp $%p",
                      ldv, endldg, (*ldgp)->ldg, (*ldgp)->ldvp));
!                 (*ldvp) = ++*ldvp;
!                 (*ldgp) = ++*ldgp;
                  HXGE_DEBUG_MSG((NULL, INT_CTL,
                      "==> hxge_ldgv_setup: new ngrps %d", *ngrps));
          }
  
          HXGE_DEBUG_MSG((NULL, INT_CTL, "==> hxge_ldgv_setup: "
--- 933,944 ----
                  (*ldgp)->ldvp = *ldvp;
                  *ngrps += 1;
                  HXGE_DEBUG_MSG((NULL, INT_CTL, "==> hxge_ldgv_setup(done): "
                      "ldv %d endldg %d ldg %d, ldvp $%p",
                      ldv, endldg, (*ldgp)->ldg, (*ldgp)->ldvp));
!                 ++*ldvp;
!                 ++*ldgp;
                  HXGE_DEBUG_MSG((NULL, INT_CTL,
                      "==> hxge_ldgv_setup: new ngrps %d", *ngrps));
          }
  
          HXGE_DEBUG_MSG((NULL, INT_CTL, "==> hxge_ldgv_setup: "