[RFC v2][PR symtab/30520] gdb/symtab: fix the gdb.cp/anon-struct test

[Dmitry Neverov]

Hi Tom,

Sorry for the late reply. I was going to finish all the paperwork before
continuing, but it takes too long.

> Anyway what I was really asking is if you ran the gdb testsuite.

I've run the testsuite locally. When patch is applied I get one
additional 'KFAIL ingdb.threads/process-dies-while-handling-bp.exp'.
But this test seems to be flaky on my machine and if I rerun it in
master, it also fails.

Do you think I should fix the formatting and re-submit the
series, or is it better to wait till all papers are signed and
accepted?

Dmitry