Set rcvar properly to fix on 10.x.
Set rcvar properly to fix on 10.x.

jevonearth/rtpproxy,synety-jdebp/rtpproxy,Vocalocity/rtpproxy-pre,synety-jdebp/rtpproxy,hongbinz/rtpproxy,hongbinz/rtpproxy,sippy/rtpproxy,dsanders11/rtpproxy,synety-jdebp/rtpproxy,sippy/rtpproxy,hongbinz/rtpproxy,jevonearth/rtpproxy,Vocalocity/rtpproxy-pre,synety-jdebp/rtpproxy,dsanders11/rtpproxy,dsanders11/rtpproxy,Vocalocity/rtpproxy-pre,jevonearth/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,hongbinz/rtpproxy,Vocalocity/rtpproxy-pre