Actually free the memory libvgz allocated to work in.
Actually free the memory libvgz allocated to work in.

No wonder gzip support leaked memory...

Orginally this memory came from the the thread workspace so deallocation
was automatic.  Not so when we switched to malloc...

gauthier-delacroix/Varnish-Cache,mrhmouse/Varnish-Cache,gquintard/Varnish-Cache,mrhmouse/Varnish-Cache,varnish/Varnish-Cache,wikimedia/operations-debs-varnish,chrismoulton/Varnish-Cache,alarky/varnish-cache-doc-ja,drwilco/varnish-cache-drwilco,gauthier-delacroix/Varnish-Cache,franciscovg/Varnish-Cache,1HLtd/Varnish-Cache,wikimedia/operations-debs-varnish,ambernetas/varnish-cache,zhoualbeart/Varnish-Cache,zhoualbeart/Varnish-Cache,chrismoulton/Varnish-Cache,ssm/pkg-varnish,ambernetas/varnish-cache,varnish/Varnish-Cache,drwilco/varnish-cache-old,feld/Varnish-Cache,varnish/Varnish-Cache,chrismoulton/Varnish-Cache,chrismoulton/Varnish-Cache,franciscovg/Varnish-Cache,varnish/Varnish-Cache,feld/Varnish-Cache,ajasty-cavium/Varnish-Cache,mrhmouse/Varnish-Cache,gauthier-delacroix/Varnish-Cache,zhoualbeart/Varnish-Cache,drwilco/varnish-cache-drwilco,alarky/varnish-cache-doc-ja,drwilco/varnish-cache-old,gquintard/Varnish-Cache,gquintard/Varnish-Cache,ajasty-cavium/Varnish-Cache,alarky/varnish-cache-doc-ja,franciscovg/Varnish-Cache,zhoualbeart/Varnish-Cache,franciscovg/Varnish-Cache,wikimedia/operations-debs-varnish,gauthier-delacroix/Varnish-Cache,wikimedia/operations-debs-varnish,gquintard/Varnish-Cache,mrhmouse/Varnish-Cache,ssm/pkg-varnish,franciscovg/Varnish-Cache,1HLtd/Varnish-Cache,feld/Varnish-Cache,1HLtd/Varnish-Cache,drwilco/varnish-cache-old,drwilco/varnish-cache-drwilco,wikimedia/operations-debs-varnish,gauthier-delacroix/Varnish-Cache,ssm/pkg-varnish,zhoualbeart/Varnish-Cache,ajasty-cavium/Varnish-Cache,ssm/pkg-varnish,varnish/Varnish-Cache,feld/Varnish-Cache,alarky/varnish-cache-doc-ja,chrismoulton/Varnish-Cache,1HLtd/Varnish-Cache,ajasty-cavium/Varnish-Cache,ajasty-cavium/Varnish-Cache,ssm/pkg-varnish,alarky/varnish-cache-doc-ja,mrhmouse/Varnish-Cache,feld/Varnish-Cache,ambernetas/varnish-cache