nat: getopt returns "static" data no need to copy it

I used strdup in case the data would not be valid from after
the call to getopt and this creates a potential leak if a user
is specifying multiple configuration files. If I depend on the
fact that the string is a pointer into the argv[] array I can
kill the strdup and fix the unlikely leak.

Fixes: Coverity CID 1206578

0 files changed, 0 insertions, 0 deletions