[PATCH v2 7/7] malloc: Check the alignment of mmapped chunks before unmapping.

[Florian Weimer]

* DJ Delorie:

> I +1'd this patch series last year when it was first posted (sorry about
> the lack of consensus-building) but just to revive it I'll +1 it again
> independently.  Could we get a second review too?  Florian?

It's similar to the other case which check chunk alignment in mapped
chunks, so this looks okay to me.

Thanks,
Florian