fix: unchecked integer underflow in p2p neighbor sort

[benjamin-stacks]

My node (compiled in debug mode) just crashed after the system clock was synced.

[coveralls]

Coverage Report for CI Build 29328759718

Coverage increased (+0.9%) to 86.568%

Details

• Coverage increased (+0.9%) from the base build.
• Patch coverage: 2 of 2 lines across 1 file are fully covered (100%).
• 11972 coverage regressions across 166 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

11972 previously-covered lines in 166 files lost coverage.

Top 10 Files by Coverage Loss	Lines Losing Coverage	Coverage
stackslib/src/chainstate/burn/db/sortdb.rs	638	90.43%
stackslib/src/chainstate/stacks/db/blocks.rs	528	89.93%
stackslib/src/chainstate/nakamoto/mod.rs	490	84.77%
stackslib/src/config/mod.rs	324	78.53%
stackslib/src/net/relay.rs	313	75.24%
stackslib/src/net/mod.rs	312	78.22%
stackslib/src/chainstate/stacks/index/storage.rs	277	82.41%
clarity/src/vm/database/clarity_db.rs	273	82.02%
stackslib/src/chainstate/stacks/db/transactions.rs	269	97.13%
stackslib/src/chainstate/stacks/miner.rs	261	83.62%

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Coverage Stats

Relevant Lines:	231325
Covered Lines:	200253
Line Coverage:	86.57%
Coverage Strength:	19554568.93 hits per line

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💛 - Coveralls

[francesco-stacks]

LGTM!