Various strncpy operations could result in a port pathname that is not a
NULL terminated string as the allowed string length is the same size as
the buffer per the strncpy manual page. This is corrected by assuring
that the allowed length is FILPATHLEN - 1.
Avoid null pointer segfault when -C param is specified with no '=' e.g.
"rigctl -C foo".
Thanks to Charles Suprin <hamaa1vs@gmail.com> for the report.
git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@3058 7ae35d74-ebe9-4afe-98af-79ac388436b8
Nate Bargmann