bench: suppress uninitialized variable warning

[hemantmm]

Resolves #5905

Description

What is the purpose of this pull request?

This pull request:

• Ensures x and y arrays are properly initialized before use.

Related Issues

Does this pull request have any related issues?

This pull request:

• resolves Fix C lint errors #5905

Questions

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No.

Other

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No.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

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Coverage Report

Package	Statements	Branches	Functions	Lines
blas/base/sdot	$\color{green}384/384$ $\color{green}+100.00\%$	$\color{green}19/19$ $\color{green}+100.00\%$	$\color{green}4/4$ $\color{green}+100.00\%$	$\color{green}384/384$ $\color{green}+100.00\%$

The above coverage report was generated for the changes in this PR.