Revert from{2,4}Byte.
Hi Thomas:
Please help me! I have no idea why num_wr_speed_des (numDesc) might
be wrong? and how to make it correct if bigger than (32 - 8) / 4,
and where the *magic numbers* about 32 and 8 come from.
Testcase by Matthias Schwarzott!
CCMAIL: scdbackup@gmx.net
CCBUG: 382941