[PATCH] testsuite: stdlib/isomac.c: add missing include

[Florian Weimer]

* Aurelien Jarno:

> On 2019-01-08 21:10, Aurelien Jarno wrote:
>> When running the testsuite, building stdlib/isomac.c outputs the
>> following warning:
>> 
>>   gcc -O   -D_GNU_SOURCE -DIS_IN_build -include /home/aurel32/glibc-build/config.h isomac.c -o /home/aurel32/glibc-build/stdlib/isomac
>>   isomac.c: In function ‘get_null_defines’:
>>   isomac.c:260:3: warning: implicit declaration of function ‘close’; did you mean ‘pclose’? [-Wimplicit-function-declaration]
>>      close (fd);
>>      ^~~~~
>>      pclose
>> 
>> Fix that by adding the <unistd.h> include.
>> 
>
> Ping, now that master is opened again for development, is this patch
> fine to be committed?

Yes, please.  Patch looks good to me.

Thanks,
Florian