llvmpipe: Initialize Test member variables.
Fix defects reported by Coverity Scan.
Uninitialized scalar field (UNINIT_CTOR) Non-static class member mErrorX is not initialized in this constructor nor in any functions that it calls. Non-static class member mErrorY is not initialized in this constructor nor in any functions that it calls.
Fixes: 1d0af5e7 ("llvmpipe: Add tests designed to exercise llvmpipe linear rasterizer.") Signed-off-by: Vinson Lee vlee@freedesktop.org