Auto merge of #114571 - nnethercote:improve-print_tts, r=petrochenkov

Improve `print_tts`

By slightly changing the meaning of `tokenstream::Spacing` we can greatly improve the output of `print_tts`.

r? `@ghost`

Author: bors

clippy_lints/src/crate_in_macro_def.rs

@@ -92,7 +92,7 @@ fn contains_unhygienic_crate_reference(tts: &TokenStream) -> Option<Span> {
         {
             return Some(span);
         }
-        if let TokenTree::Delimited(_, _, tts) = &curr {
+        if let TokenTree::Delimited(.., tts) = &curr {
             let span = contains_unhygienic_crate_reference(tts);
             if span.is_some() {
                 return span;