[PATCH] Silence -O3 -Wall warning in malloc/hooks.c with GCC 7 [BZ #22052]

[H.J. Lu]

On Thu, Aug 31, 2017 at 10:01 AM, Florian Weimer <fweimer@redhat.com> wrote:
> On 08/31/2017 05:55 AM, H.J. Lu wrote:
>
>> One of malloc change caused:
>>
>> https://sourceware.org/bugzilla/show_bug.cgi?id=22052
>
> (uninit warning with -O3)
>
> I have not yet found a good way to suppress this. I don't know yet why
> GCC loses the information that the maybe_p variable is initialized if
> mem2chunk_check returns a non-null pointer.
>

This patch works for me.   OK for master?


-- 
H.J.
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