Try to fix a crash in Hunspell.

Fix a crash in Hunspell : 

1) initializes cond.utf8 part of affentry and checking whether its elements are populated before calling |free|. 

2) Downgrade the French dictionary from 3.0.1 (Jan 2009) to 2.3.2 (Apri, 2008). 3.0.1 has aff entries with more than 8 conditions. Our version of Hunspell only supports up to 8 conditions per Affentry. Newer versions support more than8 conditions. When we update our copy of Hunspell, we'll update our dictionary again.

http://crbug.com/8551

TEST=1. Launch Chrome with '--lang=fr' (or set your spellcheck language to French in a textarea) and type random text into a textarea and quit Chrome. Chrome should quit without crashing.

2. In text area, type random text with spell checker set to French and switch to English and switch back to French. Chrome should not Crash.  

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=16115

[jungshik at Google, 2009-05-12 23:12:48]

I'm not sure which is better, patch set 1 or 3. Patch set 3 tries to avoid
potentially expensive calloc (used in patch set 1), but maybe just using calloc
is ok.

[brettw, 2009-05-12 23:22:08]

I think the calloc is fine since this is only called once ever.

I checked and this code doesn't exist in the trunk of Hunspell, so we don't need
to worry about upstreaming it.

[jungshik at Google, 2009-05-14 19:58:21]

Sid and Brett, Can you take another look?

[brettw, 2009-05-14 20:10:44]

LGTM

[jungshik at Google, 2009-05-14 20:10:58]

On 2009/05/14 19:58:21, Jungshik Shin wrote:
> Sid and Brett, Can you take another look?

BTW, fr_FR.dic is not uploaded here because it's too large (gcl refuses to
upload it :-)). I'll make a patch for 172 branch separately and check that in.
Well, this does not matter much (for the branch) because what matter is updating
 the bdic file from the download server.