parser: remove dead raw_parser NULL guard

[920032148]

This PR removes the unreachable NULL guard in raw_parser().

sql_raw_parser is initialized to a valid parser and is not reset in normal flow, so the branch cannot be hit. Keeping only the direct call makes the code simpler and avoids a misleading error path.

No functional tests were run; this is a code-quality cleanup only.

Summary by CodeRabbit

• Behavior Changes
  • Removed the controlled error handling for an unavailable SQL parser hook.

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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Run ID: 7f5c50c6-da5d-4c42-b914-571135634abd

📥 Commits

Reviewing files that changed from the base of the PR and between 375aa37 and 01ea2b2.

📒 Files selected for processing (1)

• src/backend/parser/parser.c

💤 Files with no reviewable changes (1)

• src/backend/parser/parser.c

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📝 Walkthrough

Walkthrough

raw_parser no longer validates sql_raw_parser before invocation. A NULL hook now causes direct function-pointer invocation instead of a SYSTEM_ERROR with a configuration hint.

Changes

Parser hook behavior

Layer / File(s)	Summary
Direct SQL parser hook invocation src/backend/parser/parser.c	raw_parser calls sql_raw_parser directly. The previous NULL check and SYSTEM_ERROR report were removed.

Estimated code review effort: 2 (Simple) | ~5 minutes

Merge Risk: ⚪ Minimal · up to 01ea2

The change removes an unreachable parser-hook guard and directly invokes the initialized parser hook. No concrete merge-blocking risk is identified.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 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 the main change: removing the unused NULL guard from raw_parser.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests

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