Rollup merge of #133464 - RalfJung:whitespace-panic, r=joboet

std::thread: avoid leading whitespace in some panic messages

This:
```
        panic!(
            "use of std::thread::current() is not possible after the thread's
         local data has been destroyed"
        )
```
will print a newline followed by a bunch of spaces, since the entire string literal is interpreted literally.

I think the intention was to print the message without the newline and the spaces, so let's add some `\` to make that happen.

r? ``@joboet``

0 files changed, 0 insertions, 0 deletions