Commit
5c5fce84ee36f7ff8ee5a22bbbcc586ae4e75d08
by Pau Espin Pedrolipaccess: Assert fd is positive
Make coverity happy. We are in a rx path from socket, so socket should
be fine at that point.
Closes: Coverity CID#435266
Change-Id: I09004040107fb72b6170618a6253a6225f4351c2