Add missing clobbers to context switching

This only shows in release mode, the compiler tries to preserve some
value in rdi, but that gets replaced inside the fiber. This would not
happen in the C calling convention, but in these normal Zig functions,
it can happen.
2b5306a94bLukas Lalinsky committed on 10/9/2025, 7:45:49 AM· committed by Andrew Kelleyparent88693a5
1 file changedLine totals unavailable