xbps_unpack_binary_pkg: fix wrong path to metadata files!
xbps_unpack_binary_pkg: fix wrong path to metadata files!

datenwolf/xbps,ebfe/xbps,stpx/xbps,stpx/xbps,stpx/xbps,ebfe/xbps,datenwolf/xbps,ebfe/xbps,datenwolf/xbps