[Fix] Fix memory overflow in the rotated box IoU calculation

[JingweiZhang12]

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Codecov Report

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Additional details and impacted files

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[VVsssssk]

LGTM

[filaPro]

Btw, @JingweiZhang12
Do you remember the reason why this commit should fix the memory issue? And why it was (almost?) ok before this commit?

Actually last commit to this line before your commit was mine:) We are probably facing memory issue here now, but not sure. May be will check in the future.

Thanks in advance.