[hunspell] Fix read from uninit memory.

README.chromium

 Name: hunspell
 URL: http://hunspell.sourceforge.net/
 Version: 1.3.2
 License: MPL 1.1/GPL 2.0/LGPL 2.1
 License File: COPYING
 Security Critical: yes
 
 Description:
 This is a partial copy of Hunspell 1.3.2 with the following changes:
 * Remove '#include "config.h"' from src/hunspell/hunspell.hxx
 * Remove '#include "config.h"' from src/hunspell/license.hunspell
 * Change src/hunspell/filemgr.hxx and src/hunspell/filemgr.cxx to use
   LineIterator.
 * Add ScopedHashEntry, which creates temporary hentry objects, to
   src/hunspell/suggestmgr.cxx
 * Change the input params of the constructors to receive a BDICTReader instead
   of a file path.
 * Merge http://hunspell.cvs.sourceforge.net/viewvc/hunspell/hunspell/src/hunspell/affixmgr.cxx?r1=1.40&r2=1.41
 The patch is in google.patch.
 * Add a pointer to the bdict_reader into the "SuggestMgr" so that it can use the
   replacement table from the bdict file for the secondary suggestion mechanism.
 * Avoid crash in SuggestMgr::forgotchar_utf() and SuggestMgr::forgotchar() on
   Windows by using a one-character larger buffer.
+* calloc buffers in SuggestMgr::lcs to avoid reads from uninintialized buffers.
 
 Chromium-specific changes are in google.patch. To update the patch, follow these
 steps:
 1) Checkout hunspell:
    $ cvs -z3 \
          -d:pserver:anonymous@hunspell.cvs.sourceforge.net:/cvsroot/hunspell \
          co -D "23 Mar 2012" -P hunspell
 2) Apply the existing patch:
    $ cd hunspell
    $ patch -p0 -i ~/src/third_party/hunspell/google.patch
-3) Make your new changes.
+3) Make your new changes inside the CVS hunspell directory.
 4) Generate the updated patch:
    $ cvs diff -u > ~/src/third_party/hunspell/google.patch
 
 All dictionaries used by Chromium has been checked in to the
 'third_party/hunspell_dictionaries' directory. They have several additions over
 the default myspell/hunspell dictionaries.
 (See 'third_party/hunspell_dictionaries/README.chromium' for their details.)