[PATCH v6] riscv: selftests: Fix warnings pointer masking test

[patchwork-bot+linux-riscv at kernel.org]

Hello:

This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <palmer at rivosinc.com>:

On Wed, 11 Dec 2024 23:01:43 -0800 you wrote:
> When compiling the pointer masking tests with -Wall this warning
> is present:
> 
> pointer_masking.c: In function ‘test_tagged_addr_abi_sysctl’:
> pointer_masking.c:203:9: warning: ignoring return value of ‘pwrite’
> declared with attribute ‘warn_unused_result’ [-Wunused-result]
>   203 |         pwrite(fd, &value, 1, 0); |
>       ^~~~~~~~~~~~~~~~~~~~~~~~ pointer_masking.c:208:9: warning:
> ignoring return value of ‘pwrite’ declared with attribute
> ‘warn_unused_result’ [-Wunused-result]
>   208 |         pwrite(fd, &value, 1, 0);
> 
> [...]

Here is the summary with links:
  - [v6] riscv: selftests: Fix warnings pointer masking test
    https://git.kernel.org/riscv/c/498d5b14db8c

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