store(false) in the take method probably can have relaxed ordering

[jganetsk]

async-heapless/src/oneshot.rs

Line 180 in 835ae89

self.has_message.store(false, Ordering::Release);

There's no reason for the Release in the store above, and this can be changed to Relaxed, as there are no writes to the shared data occurring prior to the store operation. We know this because of core::ptr::read:

Reads the value from src without moving it. This leaves the memory in src unchanged.