MacGui: Fix a silly Logic bug in logging code.

git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5630 b64f7644-9d1e-0410-96f1-a4d463321fa5
MacGui: improve previous commit a bit.



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5631 b64f7644-9d1e-0410-96f1-a4d463321fa5