Delete Shared Variable doesn't complain when in use

[MrSteve]

Tested delete an instance variable in 050 and it worked fine. Even complained when I was still using it and wouldn't let me delete it.

But when I created a shared variable, added it to a move block and then tried to delete the shared variable it did not complain and removed it from the pallette. But since it was still in use in my move block an exception was thrown.

Would be good if a shared variable is in use the error message told you which class(es) use it.