 libraries/wxPython: Disabled narrowing warnings.
 libraries/wxPython: Disabled narrowing warnings.

This makes gcc-6.x happy

Signed-off-by: Matteo Bernardini <638c89fd48409d8ef3e3a3c9b0a27af8629fef36@slackbuilds.org>
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