Fix small memory leak in cycles tile render, a few bytes for each tile. Reported by "aquo" on IRC.
Fix small memory leak in cycles tile render, a few bytes for each tile.
Reported by "aquo" on IRC.

tangent-opensource/coreBlackbird,pyrochlore/cycles,pyrochlore/cycles,tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird,pyrochlore/cycles