[nwam-dev] initialize return value before walk so that return value is not undefined

[anurag.mas...@sun.com]

Author: Anurag S. Maskey <Anurag.Maskey at Sun.COM>
Repository: /hg/nwam/nwam1
Latest revision: c106872f81bf83748fdfc3c4022dbd76bbdbdaec
Total changesets: 1
Log message:
initialize return value before walk so that return value is not undefined
fixes /etc/nwam/known_wifi_nets upgrade to Known WLANs

Files:
        update: usr/src/lib/libnwam/common/libnwam_known_wlan.c