Fix missing calculation of number of days on resize
Fix missing calculation of number of days on resize

Signed-off-by: Lars Henriksen <a2fd37141f23d5929304549ae011a7f22ebb96a9@get2net.dk>
Signed-off-by: Lukas Fleischer <c9ca73f8336dcfb037ec2c2abf52d80a6847a5cd@calcurse.org>

lfos/calcurse,lfos/calcurse,lfos/calcurse