[Lazarus] Synedit free makes an access violation exception

[ik]

Helllo,

When trying to do SynEdit.free (and FreeAndNil), I have an access
violation exception.
I cant figure out why.
My code:
https://github.com/ik5/split_lazarus/blob/master/src/untlazsplitview_code.pas#L174

Lazarus 1.1 r40111M FPC 2.6.0 x86_64-linux-gtk 2

Thanks,
Ido