Use realloc if possible
Use realloc if possible

Avoids memcpy/free if the buffer was dynamic.

franciscovg/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,varnish/Varnish-Cache,feld/Varnish-Cache,franciscovg/Varnish-Cache,franciscovg/Varnish-Cache,franciscovg/Varnish-Cache,feld/Varnish-Cache,gquintard/Varnish-Cache,franciscovg/Varnish-Cache,feld/Varnish-Cache,varnish/Varnish-Cache,varnish/Varnish-Cache,gquintard/Varnish-Cache,varnish/Varnish-Cache,varnish/Varnish-Cache,feld/Varnish-Cache