selftests/configfs: fix the build on 32-bit architectures

The fixture setup checks the result of mkdtemp() with ASSERT_NE(), which
hands the pointer to the harness. The harness casts both operands to
intmax_t to print them, and on 32-bit architectures gcc warns about the
cast from a pointer to an integer of a different size. The configfs
test builds with -Werror, so it fails to build there:

  kselftest_harness.h:797:49: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]

Compare the result against NULL inside ASSERT_TRUE(), so that the
harness only sees an int.

Fixes: a7fdcb2edd0f ("selftests/configfs: add tests for the userspace interface")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Reviewed-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20261103141627.30838-1-sashal@kernel.org
Signed-off-by: Breno Leitao <leitao@debian.org>

0 files changed, 0 insertions, 0 deletions