5083 avoid undefined order of operations in assignments

@@ -933,12 +933,12 @@
                 (*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;
+                ++*ldvp;
+                ++*ldgp;
                 HXGE_DEBUG_MSG((NULL, INT_CTL,
                     "==> hxge_ldgv_setup: new ngrps %d", *ngrps));
         }
 
         HXGE_DEBUG_MSG((NULL, INT_CTL, "==> hxge_ldgv_setup: "