8237847: Zero builds fail after JDK-8237637 (Remove dubious type conv…

…ersions from oop)

Reviewed-by: dcubed

src/hotspot/share/interpreter/bytecodeInterpreter.cpp

@@ -2173,7 +2173,7 @@ BytecodeInterpreter::run(interpreterState istate) {
             if (result != NULL) {
               // Initialize object (if nonzero size and need) and then the header
               if (need_zero ) {
-                HeapWord* to_zero = (HeapWord*) result + sizeof(oopDesc) / oopSize;
+                HeapWord* to_zero = cast_from_oop<HeapWord*>(result) + sizeof(oopDesc) / oopSize;
                 obj_size -= sizeof(oopDesc) / oopSize;
                 if (obj_size > 0 ) {
                   memset(to_zero, 0, obj_size * HeapWordSize);