use const address for wrapper flush

[rukai]

avoids the possibility of runtime panic due to unwrap, which allows the optimizer to go harder. Super minor performance improvement I doubt it will show up in any benchmarks, but it did reduce the size of the compiled binary by 2KB.

It also changes the address to 0.0.0.0:0 which is more clearly a dummy address.

[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #1723 will not alter performance

_{Comparing rukai:use_const_address_for_flush (293aa0a) with main (8c69a10)}

Summary

✅ 39 untouched benchmarks