[Bug] Memory leak when feature shared-memory enabled

[OlivierHecart]

Describe the bug

The opening and closing of a transport session with a localhost process (peer or router) leads to a memory leak when feature shared-memory is enabled and even if it is not used. For each opened and close transport session, the observed virtual memory increases of 8k bytes.

To reproduce

1. Start z_subexample:

$ z_sub

2. On the same host repeatedly start z_put example:

$ while true; do ./target/debug/examples/z_put; done

3. Monitor z_sub virtual memory:

$ pidstat -C z_sub -r

System info

Zenoh commit: 0ee66760a85564c0a54ec4475e3d369d2b6aefa1

[Mallets]

@yellowhatter could you verify if this issue is still relevant with the rework SHM being done in https://github.com/eclipse-zenoh/zenoh/tree/dev/1.0.0?

[yellowhatter]

@yellowhatter could you verify if this issue is still relevant with the rework SHM being done in https://github.com/eclipse-zenoh/zenoh/tree/dev/1.0.0?

Ok, I'll do.