[PATCH v4] configure.ac: Avoid empty subexpression in grep

[Alexey Neyman]

On 03/12/2017 06:00 PM, Alexey Neyman wrote:
>
>
> On 03/12/2017 03:25 PM, Mike Frysinger wrote:
>> thanks, lgtm
>> -mike
>
> Can any of you push it then?
So, what is the next step? Can anyone push it?

Regards,
Alexey.
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