Merge pull request #16285 from fengxue-IS/ddr_hiddenfield

Fix DDR hiddenfield iterator

debugtools/DDR_VM/src/com/ibm/j9ddr/vm29/j9/J9ObjectFieldOffsetIterator_V1.java

@@ -171,6 +171,7 @@ private void nextField() throws CorruptDataException {
 					offset = new UDATA(hiddenField.fieldOffset().intValue() - J9ObjectHelper.headerSize());
 					/* Hidden fields do not have a valid JVMTI index. */
 					index = new UDATA(-1);
+					break;
 				}
 			}
 		}