Reset buffer before building a CONNECT request.
Reset buffer before building a CONNECT request.

Otherwise redirects we'll stuff two requests into the same buffer
 if there's a redirect to another https URL via a proxy.

SmartWalkieOrg/opusfile,SmartWalkieOrg/opusfile,xiph/opusfile,xiph/opusfile,youfearm3/opusfile,SmartWalkieOrg/opusfile,gcp/opusfile,xiph/opusfile,gcp/opusfile,gcp/opusfile,youfearm3/opusfile