hipMemset dont enqueue command if size bytes is 0
hipMemset dont enqueue command if size bytes is 0

Change-Id: I63bf896f9f23edf254acdf7a8c11c92f8b5ac039

ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP