[PATCH v3] RISC-V: Fix build with GCC-8

[Maciej W. Rozycki]

On Tue, 23 Jun 2026, Mark Zhuang wrote:

> From: Mark Zhuang <mark.zhuang@spacemit.com>
> 
> GCC 8.5.0 rejects a declaration right after a case label.
> Add braces to fix it.

 I think it would be more useful to the reader if the commit referred to 
the relevant C language standard and minimum compiler version as given by 
Andreas: <https://inbox.sourceware.org/binutils/mvmtsqtzgve.fsf@suse.de/>.

 FWIW it broke the build with GCC 10.2.1 here (production box, system
compiler).

  Maciej