cProtocol172: Check return values.

Fixes CID 43489, CID 43490, CID 43491, CID 43493, CID 66410, CID 66411, CID 66416, CID 66417, CID 66418, CID 66419, CID 66420, CID 66421, CID 66422, CID 66423, CID 66424, CID 66425, CID 66429, CID 66430, CID 66431
Add entry for bat in monsters.ini
Merge pull request #1316 from ChriPiv/master

Add entry for bat in monsters.ini