Datagram server: Fixed memory leak if the request handler have an inner loop

[francis-clairicia]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (bb44709) to head (3eab47a).
Report is 61 commits behind head on main.

Additional details and impacted files

Flag	Coverage Δ
OS-Linux	99.87% <100.00%> (-0.01%)	⬇️
OS-Windows	99.75% <100.00%> (-0.01%)	⬇️
OS-macOS	99.87% <100.00%> (-0.01%)	⬇️
Py-3.11	99.84% <100.00%> (-0.01%)	⬇️
Py-3.12	99.74% <100.00%> (-0.01%)	⬇️
test-functional	82.52% <100.00%> (-0.01%)	⬇️
test-unit	89.00% <62.50%> (-0.04%)	⬇️

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