dgram: check udp buffer size to avoid fd leak

[theanarkh]

const udp = require('dgram');

// uncaughtException event is triggered
process.on('uncaughtException', () => {});

for (let i = 0; i < 10; i++) {
    const socket = udp.createSocket({type: 'udp4', recvBufferSize: 'x'});
    // error and listening events are not triggered
    socket.on('error', () => {
        socket.close();
    });
    socket.on('listening', () => {
        socket.close();
    });
    socket.bind(0);
}

The process will open 10 fds.

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines

[nodejs-github-bot]

Review requested:

• @nodejs/net

[mcollina]

lgtm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.00%. Comparing base (4cf6fab) to head (37fbf6d).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #56084   +/-   ##
=======================================
  Coverage   88.00%   88.00%           
=======================================
  Files         656      656           
  Lines      188988   188995    +7     
  Branches    35992    35996    +4     
=======================================
+ Hits       166315   166325   +10     
+ Misses      15838    15836    -2     
+ Partials     6835     6834    -1     

Files with missing lines	Coverage Δ
lib/dgram.js	97.35% <100.00%> (+0.01%)	⬆️

... and 28 files with indirect coverage changes

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/63803/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/63807/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/63809/