Add changelog entry for #487 and fix a comment typo

[horgh]

Follow-up to #487, which fixed the -Wsign-compare build failure on 32-bit
platforms but landed without a changelog entry.

Two commits:

1. Changelog entry. Adds a ## next release section crediting Robert
   Scheck for Fix signedness warning in data section size check (fixes #486) #487. The fix matters to distro packagers: on platforms where
   ssize_t is 32 bits, such as i686, -Werror turned the warning into a
   build failure. This project records compiler-warning fixes with reporter
   credit, so this one belongs in Changes.md too.

2. Comment typo. Removes a duplicated word in the data_section_size < 3
   comment ("with valid valid metadata"). The typo dates back to 0881b61 in
   2017, so it is original rather than a rewrap artifact. The paragraph is
   rewrapped to keep the file's fill style, which is why the diff touches
   three lines instead of one.

No functional change.

Verified: precious lint passes on Changes.md, clang-format --dry-run -Werror is clean, the build produces no warnings from src/, and make check gives 34 PASS / 0 FAIL.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Bug Fixes

  • Fixed a signedness warning in MMDB_open() that could cause builds to fail when warnings are treated as errors, particularly on 32-bit platforms such as i686.

• Documentation

  • Added a next-release changelog entry describing the build fix.
  • Clarified the rationale behind validation performed when opening database files.

[coderabbitai]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Advanced

Run ID: 3743941f-a85a-4a4b-a48d-6eb564efea35

📥 Commits

Reviewing files that changed from the base of the PR and between 00f59ab and 6969845.

📒 Files selected for processing (2)

• Changes.md
• src/maxminddb.c

Included review availability: Your plan provides up to 4 included reviews per hour; 3 remain after this review.

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📝 Walkthrough

Walkthrough

The changelog documents a -Wsign-compare build fix for 32-bit ssize_t platforms. A comment in MMDB_open() now explains the minimum data-section size required by later bound checks. No code behavior changed.

Changes

Warning fix documentation

Layer / File(s)	Summary
Release and validation notes Changes.md, src/maxminddb.c	The changelog records the -Wsign-compare fix. The MMDB_open() comment clarifies the data_section_size < 3 validation requirement.

Priority: ➖ Normal

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other · Severity of issue fixed: Medium

Suggested reviewers: oschwald

Merge Risk: ⚪ Minimal · up to 69698

The PR adds release notes and clarifies an existing comment without introducing a repository-controlled lint or runtime risk.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (1 skipped: 1 …	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes both changes: adding the changelog entry for issue #487 and correcting the comment wording.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 1 files. (1 skipped: 1 unsupported.)

• Fix all pre-merge checks with AI

✨ Finishing Touches 💡 1

📝 Generate docstrings 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch wstorey/changelog

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🟢 Approval recommended

No unresolved issues were identified.

Pull request overview

This PR adds the missing changelog entry for #487 and fixes a duplicated word in a source comment. No functional changes are introduced.

Changes:

• Documents the 32-bit -Wsign-compare fix.
• Corrects and rewraps the data_section_size comment.

File summaries

File	Description
src/maxminddb.c	Fixes the duplicated word in a comment.
Changes.md	Adds the #487 next-release changelog entry.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Lite

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