modified atomic::ordering about SHOULD_CAPTURE

[wang384670111]

incubator-teaclave-sgx-sdk/sgx_tstd/src/panic.rs

Line 261 in 780dc89

SHOULD_CAPTURE.store(style.as_usize(), Ordering::Release);

incubator-teaclave-sgx-sdk/sgx_tstd/src/panic.rs

Line 287 in 780dc89

BacktraceStyle::from_usize(SHOULD_CAPTURE.load(Ordering::Acquire))

I think the use of ordering here is irregular, SHOULD_CAPYURE is used not to synchronize access to other shared variables. I think just Ordering::Relaxed needs to be used here to ensure the correctness of the program.

[volcano0dr]

@wang384670111 Thanks for reporting this issue.