🙈 Fix compile error and editor runtime issue in Unity 6.3

[a3geek]

Summary

When import the plugin with Unity 6.3.3f1, a compile error was occurred, so this has been resolved.
Also, an infinite loop was occurring in the Editor Runtime, causing Unity to crash, so this issue has been resolved as well.
These are very minor changes, and I believe they were due to minor human error.

• Create or edit test cases here
• Add a CHANGELOG entry for this change.
• Ensure documentation requirements are met e.g., public API is commented.
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Test Cycle

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Reviewer Tasks

• Code reviewed.
• Non-code assets e.g. Unity assets/scenes reviewed.
• All tests must be ran and cover all scenarios (If not, add new tests to the cycle and run them).
• Documentation has been reviewed.
• Approve with a comment of any additional tests run or any observations.

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