Fix ref bug

AttributeCombiner.cpp

@@ -1111,6 +1111,7 @@ void AttributeCombiner::write_dynspec_attributes(Tango::WAttribute &attr,DynSpec
 		SAFE_FREE(item->refData);
 		item->refData = (double *)malloc( length* sizeof(double) );
 		memcpy(item->refData,w_val,length*sizeof(double));
+    item->refSize = length;
 		return;
 	}