Fix code scanning alert - Size computation for allocation may overflow

[2lambda123]

Tracking issue for:

• [ ] https://github.com/2lambda123/waku-org-go-waku/security/code-scanning/4

[secure-code-warrior-for-github[bot]]

Micro-Learning Topic: Size computation for allocation may overflow (Detected by phrase)

Matched on "Size computation for allocation may overflow"

What is this? (2min video)

When computing the size of an allocation based on the size of a large object, the result may overflow and cause a runtime panic.

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[git-greetings[bot]]

Thanks @2lambda123 for opening this issue!

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[gitginie[bot]]

@2lambda123! Thank you for your contribution to this repository! We appreciate your effort in opening issue. Happy coding!

[git-greetings[bot]]

Issues Details of @2lambda123 in waku-org-go-waku :	OPEN	CLOSED	TOTAL
4	0	4

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