fix: check for the nil client before attempting to send a request

[rustatian]

Reason for This PR

• Panic on superfast connect when RR is still initializing.

Description of Changes

• Check the client for nil.

License Acceptance

By submitting this pull request, I confirm that my contribution is made under
the terms of the MIT license.

PR Checklist

[Author TODO: Meet these criteria.]
[Reviewer TODO: Verify that these criteria are met. Request changes if not]

• All commits in this PR are signed (git commit -s).
• The reason for this PR is clearly provided (issue no. or explanation).
• The description of changes is clear and encompassing.
• Any required documentation changes (code and docs) are included in this PR.
• Any user-facing changes are mentioned in CHANGELOG.md.
• All added/changed functionality is tested.

Summary by CodeRabbit

• Bug Fixes
  • Improved error handling for uninitialized clients in the RPC calls, providing a clear message to wait if the system is not ready yet.

[coderabbitai]

Walkthrough

The recent update enhances the system's resilience by adding error handling for scenarios where the RPC client is not yet initialized. It prevents premature RPC calls by checking if the client object is nil and, if so, advises waiting a bit longer with a friendly error message. This minor yet crucial change ensures smoother operation and user experience by avoiding unexpected failures when the system is still getting ready.

Changes

File	Summary
rpc.go	Introduced error handling for uninitialized client, advising to wait if "RoadRunner is not ready yet".

🐇✨
In the land of code where the bits roam free
A rabbit found an error, as clear as could be
"Wait," it said, "for the RoadRunner's pace,
Not yet ready, it needs some space.
So hold your requests, just give it a sec,
For smoother paths, without a speck."
🚀🌟

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Review Status

Actionable comments generated: 1

Configuration used: CodeRabbit UI

Commits

Files that changed from the base of the PR and between 663641b and 308a764.

Files ignored due to path filters (1)

• go.work.sum is excluded by: !**/*.sum

Files selected for processing (1)

• rpc.go (35 hunks)