[IE QM] Error is thrown after focusing editor

[Piotrek Koszuliński]

1. Remove Doctype from one of the samples.
2. Open it in IE9.
3. Click in the editor.
4. Error is thrown

[Piotrek Koszuliński]

Pushed ​branch:t/12850.

Unfortunately I haven't found a way to stop Bender adding a doctype so I couldn't write a manual test.

While reviewing check FF QM, IE8 QM and IE9 QM with the following scenario:

1. Remove doctype from the replacebycodesample.
2. Open it.
3. Verify that browse works in QM (in IE in dev tools and in FF in page info (CTRL+i)).
4. Click inside the editor.
5. Click new page.
6. Click inside the editor again.

Error should not be thrown.

[Piotrek Koszuliński]

Actually, we should use a different check than using CKEDITOR.env, because we can sniff whether document supports old or new selection, but it's too late in the testing phase to make such change.

[Piotrek Koszuliński]

Fixed on master with ​git:fb00b8a.