parsecsv: always check result of malloc()

RebiewBoard #670.

Patch by icchan. Thanks!


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5957 b64f7644-9d1e-0410-96f1-a4d463321fa5
Revert previous borked commit. Sorry!


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5958 b64f7644-9d1e-0410-96f1-a4d463321fa5