getWidth()/getHeight() incorrect value or rounding error

[john-kelly]

Describe the bug
getWidth()/getHeight() doesnt produce correct value in some cases.

To Reproduce
https://codehs.com/sandbox/andy/genuary-18-1

Expected behavior
Should not error.

Screenshots

Desktop (please complete the following information):
Chrome Version 96.0.4664.110 (Official Build) (arm64)

[anderoonies]

@all-contributors recognize @john-kelly for bug report

[allcontributors]

@anderoonies

I could not determine your intention.

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[anderoonies]

@all-contributors please add @john-kelly for bug report

[allcontributors]

@anderoonies

I've put up a pull request to add @john-kelly! 🎉