[committed] malloc: Fix tcache leak on thread destruction [BZ #22111]

[Carlos O'Donell]

On 10/06/2017 01:21 PM, Joseph Myers wrote:
> Reminder, if backporting a bug fix to a release branch you also need to 
> add the NEWS entry for the fixed bug manually on the release branch 
> (possibly cut-and-pasted from the output of scripts/list-fixed-bugs.py 
> 2.27).
 
Thanks. I'd forgotten about that step.

-- 
Cheers,
Carlos.