[clang-format] Don't eat two semicolons after namespace

[HazardyKnusperkeks]

Summary

Remove the double check, move the comment.

This changes behavior, but I think for the better. Despite the comment my personal opinion would be to not even gracefully handle the one semicolon, it shouldn't be there.

[HazardyKnusperkeks]

Ping

[MyDeveloperDay]

Feels like this would only show if someone did

namespace A {
};;

Which seems odd

[MyDeveloperDay]

clang/lib/Format/UnwrappedLineParser.cpp

2977

This comment was wrong I guess, because of /*MunchSemi=*/true

NOTE: Clang-Format Team Automated Review Comment

It looks like your clang-format review does not contain any unit tests, please try to ensure all code changes have a unit test (unless this is an NFC or refactoring, adding documentation etc..)

Add your unit tests in clang/unittests/Format and you can build with ninja FormatTests. We recommend using the verifyFormat(xxx) format of unit tests rather than EXPECT_EQ as this will ensure you change is tolerant to random whitespace changes (see FormatTest.cpp as an example)

For situations where your change is altering the TokenAnnotator.cpp which can happen if you are trying to improve the annotation phase to ensure we are correctly identifying the type of a token, please add a token annotator test in TokenAnnotatorTest.cpp