Rollup merge of #66766 - RalfJung:panic-comments, r=SimonSapin

Panic machinery comments and tweaks

This is mostly more comments, but I also renamed some things:
* `BoxMeUp::box_me_up` is not terribly descriptive, and since this is a "take"-style method (the argument is `&mut self` but the return type is fully owned, even though you can't tell from the type) I chose a name involving "take".
* `continue_panic_fmt` was very confusing as it was entirely unclear what was being continued -- for some time I thought "continue" might be the same as "resume" for a panic, but that's something entirely different. So I renamed this to `begin_panic_handler`, matching the `begin_panic*` theme of the other entry points.

r? @Dylan-DPC @SimonSapin

1 files changed, 1 insertions, 1 deletions

diff --git a/src/libpanic_unwind/lib.rs b/src/libpanic_unwind/lib.rs
index d97a7a8a87d..0c834e5c2a0 100644
--- a/src/libpanic_unwind/lib.rs
+++ b/src/libpanic_unwind/lib.rs
@@ -94,5 +94,5 @@ pub unsafe extern "C" fn __rust_maybe_catch_panic(f: fn(*mut u8),
 #[unwind(allowed)]
 pub unsafe extern "C" fn __rust_start_panic(payload: usize) -> u32 {
     let payload = payload as *mut &mut dyn BoxMeUp;
-    imp::panic(Box::from_raw((*payload).box_me_up()))
+    imp::panic(Box::from_raw((*payload).take_box()))
 }