Cleans up socket after sending payload to x-ray

[DarcyRaynerDD]

What does this PR do?

Socket for send X-Ray sdk payload wasn't being cleaned up correctly, and was causing system to run out of sockets.

Motivation

Fix for issue #113 .

Testing Guidelines

Additional Notes

Types of Changes

• Bug fix
• New feature
• Breaking change
• Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• This PR's description is comprehensive
• This PR contains breaking changes that are documented in the description
• This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• This PR impacts documentation, and it has been updated (or a ticket has been logged)
• This PR's changes are covered by the automated tests
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[dncrews]

@DarcyRaynerDD late to the party, but thank you for this. This has been causing us immeasurable headache over the last few months, and we couldn't figure out where the "memory leak" (file-descriptors leak, tho) was coming from.