The format checker CI job has the following error:
```
Checking GNU style for a7b06b8853461f1903d8e063b417701c38a763fb
=== ERROR type #1: braces should be on a separate line (1 error(s)) ===
gcc/rust/backend/rust-intrinsic-handlers.cc:1146:54: return [model] (Context
*ctx, TyTy::FnType *fntype) {
=== ERROR type #2: there should be no space before a left square bracket (1
error(s)) ===
gcc/rust/backend/rust-intrinsic-handlers.cc:1146:9: return [model] (Context
*ctx, TyTy::FnType *fntype) {
```
However, when I make the suggested change, then run the `clang-format.py`
script, it undoes the edit. The existing pattern also follows style from
surrounding functions.
--
https://forge.sourceware.org/gcc/gcc-TEST/pulls/161#issuecomment-6100
