Fixed invalid memory access issue in SkColorSpaceXform::apply()

Passing in a large buffer along with a source colour space that
used a CLUT would cause apply() to read freed heap memory, or
for smaller buffers read possibly re-used stack memory.
The code previously likely lucked out due to optimizations
removing most or all of the subsequent stack allocations.

BUG=skia:

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2759

Change-Id: I39f357bce080c4d737a83dd019f0d1ccbc56f995
Reviewed-on: https://skia-review.googlesource.com/2759
Commit-Queue: Robert Aftias <raftias@google.com>
Reviewed-by: Matt Sarett <msarett@google.com>

0 files changed, 0 insertions, 0 deletions