Fix crc_table pointer in minizip.

Looks like the changes in 6c9bd474aa08312ef2e2e9655a80e18db24a1680 made the minizip partially non-usable with re-enabled crypto support. 
The encrypted zip files created by the minizip are impossible to extract with other programs, and the minizip can't extract encrypted files created by other programs or previous versions.

The affected systems are the LP64 systems (64-bit Unix variants).
64 bit windows systems are not affected.