RFR: 8289768: Clean up unused code [v2]

[Daniel Jeliński]

On Thu, 7 Jul 2022 19:06:52 GMT, Chris Plummer <cjplummer at openjdk.org> wrote:

>> Daniel Jeliński has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains four additional commits since the last revision:
>> 
>>  - Merge remote-tracking branch 'origin' into unused-variables
>>  - Remove unused variables (windows)
>>  - Remove unused variables (macos)
>>  - Remove unused variables (linux)
>
> src/jdk.hotspot.agent/linux/native/libsaproc/symtab.c line 308:
> 
>> 306:   ELF_SHDR* shbuf = NULL;
>> 307:   ELF_SHDR* cursct = NULL;
>> 308:   ELF_PHDR* phbuf = NULL;
> 
> phbuf is also essentially unused. The only reference is to free it if non-null, but it's always NULL, so that code can be removed too.

Good catch! Also removed similar code from macOS version.

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PR: https://git.openjdk.org/jdk/pull/9383