[Opera] Fix red tests

[Piotrek Koszuliński]

/dt/core/editable/keystrokes.html#test handle del/backspace at the boundary of table cell[[BR]]
/dt/plugins/image/image.html#test read image (inline styles)[[BR]]
/dt/plugins/forms/textfield.html#test empty fields[[BR]]
/dt/plugins/forms/textfield.html#test read attributes (email)[[BR]]
/dt/plugins/list/backspace.html#test backspace join list items[[BR]]
/dt/plugins/list/backspace_enterBr.html#test backspace key after secondary list[[BR]]
/dt/plugins/find/find.html#test find and replace[[BR]]
/dt/plugins/tabletools/cellproperties.html#test cell properties dialog (text selection)[[BR]]
/dt/plugins/div/div.html#test create div

[Piotrek Koszuliński]

I think that most of these failures are caused by #9507.

[Olek Nowodziński]

Created ​t/10098@cksource with a fix that reverts part of #9507 in Opera.

[Piotrek Koszuliński]

Use the plain if statement, Luke.

[Olek Nowodziński]

Replying to Reinmar:

Use the plain if statement, Luke.

Hmmm... fixed, this code is.

[Piotrek Koszuliński]

With force pushed this branch rebased on master not major, Luke.

[Olek Nowodziński]

Fixed in ​git:c335a3f90c1f0.