fix inheritance of class variables

include/tr/class.h

@@ -81,9 +81,9 @@
 	((struct c_##name##_vars *)(TR_CLASS_BY_NAME_STATIC(name))->vars)
 
 #define TR_INHERIT_CLASSVARS(dest, src) \
-	memcpy(&c_##dest##_vars,            \
+	memcpy(TR_CLASSVARS_BY_NAME(dest), \
 			TR_CLASSVARS_BY_NAME(src),  \
-			sizeof(TR_CLASSVAR_DECL(src)))
+			sizeof(TR_CLASSVARS_DECL(src)))
 
 
 /**