Fixed an uninitialized member in IECore::DeepPixel that could cause undefined behaviour when adding new samples.
Fixed an uninitialized member in IECore::DeepPixel that could cause undefined behaviour when adding new samples.

lento/cortex,appleseedhq/cortex,appleseedhq/cortex,goddardl/cortex,lento/cortex,lento/cortex,hradec/cortex,appleseedhq/cortex,goddardl/cortex,goddardl/cortex,hradec/cortex,hradec/cortex