It's fixed in the dvdrip-0.52.0.ebuild, but not in both dvdrip-0.52.7.ebuild and dvdrip-0.52.7-r1.ebuild files.
dvdrip-0.52 should be removed. *** This bug has been marked as a duplicate of 149344 ***
not a dupe, and these versions probably wont be removed too soon anyway.
Fixed in CVS, thanks for reporting