No threading issues in SpellChecker.

SpellChecker is exclusively called from the main UI thread and
there are no concurrency issues. As a result, the TextView's
wordIterator can safely be re-used in the parse() method.

Also reset the pool of SpellParsers on language change.

Change-Id: I1cc8a2750f21233754f006e40a81622730030ec8
2 files changed