UE4 small nit about float to float comparison

[domgreen]

What type of PR is this?
/kind cleanup

What this PR does / Why we need it:
Small nit in the UE4 code. Comparison should be between same types.

cc @tomnetspeak who originally raised it 😄

[domgreen]

@achynes would you mind confirming this is a good thing 👍

[agones-bot]

Build Succeeded 👏

Build Id: a2ad15cc-a503-45fe-9d31-2c099278a050

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.9.0-b67f6d3
• image: gcr.io/agones-images/agones-sdk:1.9.0-b67f6d3
• image: gcr.io/agones-images/agones-ping:1.9.0-b67f6d3
• Linux C++ SDK (build): agonessdk-1.9.0-b67f6d3-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.9.0-b67f6d3.zip

A preview of the website (the last 30 builds are retained):

• https://b67f6d3-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/1792/head:pr_1792 && git checkout pr_1792
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.9.0-b67f6d3

[markmandel]

Calling our Unreal user base:
@drichardson @dotcom @WVerlaek @robbieheywood

if someone could give me a 👍 , I'll get this merged!

[markmandel]

I'm taking that 👍 as a win 😄 approving.

[google-oss-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: domgreen, markmandel

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[google-oss-robot]

New changes are detected. LGTM label has been removed.

[agones-bot]

Build Failed 😱

Build Id: 1457e628-5d0b-46a9-85f6-86246bea1bda

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[agones-bot]

Build Failed 😱

Build Id: f625223a-a031-4c62-921f-fe1a34c419af

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[agones-bot]

Build Failed 😱

Build Id: deba5e57-aa54-4366-ba36-bf5183331f95

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[agones-bot]

Build Succeeded 👏

Build Id: 5804d932-2a1a-493f-997f-70ed0bf55f35

The following development artifacts have been built, and will exist for the next 30 days:

• image: gcr.io/agones-images/agones-controller:1.9.0-7e22dc2
• image: gcr.io/agones-images/agones-sdk:1.9.0-7e22dc2
• image: gcr.io/agones-images/agones-ping:1.9.0-7e22dc2
• Linux C++ SDK (build): agonessdk-1.9.0-7e22dc2-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.9.0-7e22dc2.zip

A preview of the website (the last 30 builds are retained):

• https://7e22dc2-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/1792/head:pr_1792 && git checkout pr_1792
• helm install ./install/helm/agones --namespace agones-system --name agones --set agones.image.tag=1.9.0-7e22dc2