intel/compiler: Initialize SIMDSelectionTest member error.
Fix defect reported by Coverity Scan.
Uninitialized pointer field (UNINIT_CTOR) uninit_member: Non-static class member error is not initialized in this constructor nor in any functions that it calls.
Fixes: 7558340e ("intel/compiler: Add helpers to select SIMD for compute shaders") Signed-off-by: Vinson Lee vlee@freedesktop.org