Problem: anyone can call the cancellation function

[thomas-nguy]

👮🏻👮🏻👮🏻 !!!! REFERENCE THE PROBLEM YOUR ARE SOLVING IN THE PR TITLE AND DESCRIBE YOUR SOLUTION HERE !!!! DO NOT FORGET !!!! 👮🏻👮🏻👮🏻

Solution: check that only the event emitted from contract address can cancel the token it manages

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Thank you for your code, it's appreciated! :)

[adu-crypto]

LGTM
I check the other handlers and do not find the similar cases.

[yihuang]

LGTM, can you add a changelog entry?