Fix lack of checking from prototype to see if watch removed the variable
Fix lack of checking from prototype to see if watch removed the variable

In the case variable that was only in __proto__ was watched it could not be set
anymore (oops)

freedesktop-unofficial-mirror/swfdec__swfdec,freedesktop-unofficial-mirror/swfdec__swfdec,mltframework/swfdec,mltframework/swfdec,freedesktop-unofficial-mirror/swfdec__swfdec