Comment 99 for bug 303269

Created attachment 552655
patch v2.7

I fixed the reftest with kaze and volkmar help. We came to a better solution:
make the test and the reference exactly similar except the reference will have spellcheck=false. Then, there's no need anymore to blur the editor.

I also modified another thing since last patch:

> > Then can we just not attempt to do a spell check in that case?
>
> Good idea. In attached patch, I return early from
> mozInlineSpellChecker::ResumeCheck if there is not dictionary available.
>

Actually, I also need to cleanup previously underline words, by calling RemoveRange. Otherwise, a word may stay underlined, even if editor has changed @lang to a unknown one.
That case is coved by test-3

I've tested attached patch on tryserver, and it looks like it's correct:
http://tbpl.mozilla.org/?tree=Try&rev=3adb6f0528ac