winedbg: Use macros when manipulating variants.

programs/winedbg/memory.c

@@ -466,10 +466,10 @@ static void print_typed_basic(const struct dbg_lvalue* lvalue)
                             sub_type.id = fcp->ChildId[i];
                             if (!types_get_info(&sub_type, TI_GET_VALUE, &variant)) 
                                 continue;
-                            switch (variant.n1.n2.vt)
+                            switch (V_VT(&variant))
                             {
-                            case VT_I4: ok = (val_int == variant.n1.n2.n3.lVal); break;
-                            default: WINE_FIXME("Unsupported variant type (%u)\n", variant.n1.n2.vt);
+                            case VT_I4: ok = (val_int == V_I4(&variant)); break;
+                            default: WINE_FIXME("Unsupported variant type (%u)\n", V_VT(&variant));
                             }
                             if (ok)
                             {

programs/winedbg/symbol.c

@@ -105,7 +105,7 @@ static BOOL fill_sym_lvalue(const SYMBOL_INFO* sym, ULONG_PTR base,
             if (buffer) snprintf(buffer, sz, "Couldn't get full value information for %s", sym->Name);
             return FALSE;
         }
-        else if (v.n1.n2.vt & VT_BYREF)
+        else if (V_ISBYREF(&v))
         {
             /* FIXME: this won't work for pointers or arrays, as we don't always
              * know, if the value to be dereferenced lies in debuggee or