Correct copy-paste typo of depth_cpp instead of depth and use nullptr
instead of NULL, as GTest suggest in documentation:
When comparing a pointer to NULL, use EXPECT_EQ(ptr, nullptr) instead of EXPECT_EQ(ptr, NULL).
Fixes: ef9362acb8 ("gallium/osmesa: Return cleanly for OSMesaGetDepthBuffer() with no depth.")
Signed-off-by: David Heidelberg <david@ixit.cz>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31606>
David Heidelberg
321012b95d