[clang] Fix buildbot failure. (PR #86741)

[Kazu Hirata via cfe-commits]

kazutakahirata wrote:

> I thought the issue was fixed with the (void) addition! If not, I will merge this PR immediately.

Sorry, I misunderstood.  The `void` fix (https://github.com/llvm/llvm-project/commit/577e0ef94fb0b4ba9f97a6f58a1961f7ba247d21) fixes the build error.

Meanwhile, I am guessing that you have added lambda functions to control the behavior of `PrintedDeclCXX98Matches`.  If that's the case, you should merge this PR.  But then again, there is no urgency as the build has been restored.

https://github.com/llvm/llvm-project/pull/86741