Fix windows issue with multiple workers

[Sergey Brester]

Hi, 

enclosed a further changeset with "backwards compatibility" to 1 worker
processing (without inheritance as before fix), if single worker
configured + a little bit code review. 

P.S. github updated also. 

Regards,
sebres. 

11.06.2015 15:03, Sergey Brester: 

> Hi, 
> 
> I've forgotten to free the shmem, thus enclosed an amendment with clean-up, relative last changeset. 
> 
> Regards,
> sebres.
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.nginx.org/pipermail/nginx-devel/attachments/20150612/84f11eba/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: _sb-win-multi-worker-add-3.patch
Type: text/x-diff
Size: 9107 bytes
Desc: not available
URL: <http://mailman.nginx.org/pipermail/nginx-devel/attachments/20150612/84f11eba/attachment-0001.bin>