Dates corrected in copyright headers to reflect original publication date
(2018 for OpenCL, 2020 for Level Zero).
Signed-off-by: lgotszal <lukasz.gotszald@intel.com>
Allow return value size to be 0. Do not modify return value size in case
of error.
Related-To: NEO-4368
Change-Id: I201e8ee7c23fcdc2712f6b04bedc71bf4ab64f06
Signed-off-by: Filip Hazubski <filip.hazubski@intel.com>