addch() and addstr() throw an exception if text has to be printed
outside of the window. This may occur if the terminal is very small.
Such erroneous prints are no-ops now.
Signed-off-by: Mart Lubbers <mart@martlubbers.net>
Signed-off-by: Nicolas Sebrecht <nicolas.s-dev@laposte.net>
Github-ref: https://github.com/OfflineIMAP/offlineimap/issues/595