[issue18408] Fixes crashes found by pyfailmalloc

[Roundup Robot]

Roundup Robot added the comment:

New changeset ddff866d820d by Victor Stinner in branch 'default':
Issue #18408: Fix PyInit__curses_panel(), handle import_curses() failure
http://hg.python.org/cpython/rev/ddff866d820d

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18408>
_______________________________________