#259 Crash on Docking a form that have a UniSynEdit

[Oleg Burlaca]

I've attached a sample that reproduces the bug:

Summary
1. Create an app that have a form with UniSynEdit on it
2. Drag&Dock the form into the PageControl
3. ManualFloat the form by dragging the TabSheet

at step 2 or 3 you should get an error or the app will crash

if not, then repead 2-3 (~ 1 to 7 times) until you get 'Access
Violation'

Workaround: Create the ASynEdit := TSynEdit.Create and
ASynEdit.Parent := myForm
after the form was docked and before it is
undocked!