Detect when On Error statement refers to a LineLabel defined above

[retailcoder]

This code is legal, but certainly doesn't produce the expected results:

Public Sub DoSomething
    ErrHandler:
        Err.Clear

    On Error GoTo ErrHandler
    'code
End Sub

yes, people have done that

Since we now pick up LineLabel declarations, we can easily inspect OnError statements and locate instances where the OnError statement is pointing to a LineLabel that's declared above it.. which is clearly a bug waiting to happen.