libunwind: readd link attrs to _Unwind_Backtrace
It seems the removal of these in 1c07096a45 was unintended; readding them fixes the build.
fixes rust-lang/rust#93349
r? `@alexcrichton`
libunwind: readd link attrs to _Unwind_Backtrace
It seems the removal of these in 1c07096a45 was unintended; readding them fixes the build.
fixes rust-lang/rust#93349
r? `@alexcrichton`