additional test to ensure exit with open mk channels is ok
additional test to ensure exit with open mk channels is ok

When an interpreter exits a channel close procedure may be called with
a NULL interp argument. Ensure this does not cause a problem.

Signed-off-by: Pat Thoyts <fe43a83262eef1680511f524a1e74d43c633cffe@users.sourceforge.net>


jcw/metakit,colemancda/metakit,jcw/metakit,jcw/metakit,princeofdarkness76/metakit,princeofdarkness76/metakit,jcw/metakit,princeofdarkness76/metakit,colemancda/metakit,jcw/metakit,princeofdarkness76/metakit,princeofdarkness76/metakit,colemancda/metakit,colemancda/metakit,colemancda/metakit