Bug 6885 Follow up patch, invert tested condition

Bug 6885 Follow up patch, invert tested condition

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Not sure the brackets are nessecary, but I think I remember learning
bitwise operators have a lower priority than other relational
operators so wanted to make sure we notted the result of the bitwise
and, not the flag

Signed-off-by: Paul Poulain <paul.poulain@biblibre.com>
(cherry picked from commit 6fd3635a598f0a38c1ac71e998f4cb799a1b4b3e)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>