[PATCH][libstdc++-v3 parallel mode] Fix memory leaks in multiway_merge

[Paolo Carlini]

Johannes Singler wrote:
> This patch fixes two memory leaks (and non-called destructors) in
> multiway_merge.
>
> Tested x86_64-unknown-linux-gnu: No regressions
>
> Please approve for mainline and gcc-4_4-branch.
>   
Ok, thanks. Out of curiosity, are you using valgrind to chase those
leaks? I'm trusting you both about the issue proper and the fix.
> 2009-09-10  Johannes Singler  <singler@ira.uka.de>
>
>         * include/parallel/multiway_merge.h
>        (multiway_merge_exact_splitting): Deallocate borders correctly.
>        (parallel_multiway_merge): Remove unnecessarily complicated
>        allocation, random access iterators are default-constructible.
>
>        Deallocate ne_seqs correctly.
>   
A semicolon instead of the blank line, I guess. Like this, isn't a
properly formatted ChangeLog entry, for sure ;)

Paolo.