development/ola: Fixed bogus compilation error.
development/ola: Fixed bogus compilation error.

-Werror suppressed by adding -Wnoerror=conversion to flags.

Signed-off-by: Willy Sudiarto Raharjo <370971f3b2b804ed58e63f6bfe153fc3c112b006@slackbuilds.org>

panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds,panosmdma/SlackOnly-SlackBuilds