Debugger/Stack layout view: Exclude Dereferenced Pointers.

by WatchData::referencingAddress as they are outside
the address range.

src/plugins/debugger/watchhandler.cpp

@@ -748,6 +748,8 @@ QVariant WatchModel::data(const QModelIndex &idx, int role) const
 
         case LocalsAddressRole:
             return data.coreAddress();
+        case LocalsReferencingAddressRole:
+            return QVariant(data.referencingAddress);
         case LocalsSizeRole:
             return QVariant(data.size);