Multiplication result converted to larger type

[Shivam7-1]

To address the potential overflow issue in the multiplication of w * h * (bit16 ? 8 : 4) and casting it to size_t, I had perform the multiplication using size_t directly to avoid the overflow.
patch link: https://issuetracker.google.com/issues/322327444

Code modification ensures that the multiplication is done using the larger integer type (size_t) before casting the result to unsigned char*. Using size_t for the multiplication helps prevent overflow issues, as size_t is typically large enough to accommodate the size of memory in the system.

[Shivam7-1]

Hi @lvandeve Could You Please Review Above PR

Thanks & Regards

[Shivam7-1]

Hi @enh-google Could You Please Review Above PR

Thanks & Regards

[enh-google]

(i only maintain Android's copy of this code, and we only use this file on the host, where we don't enable intsan anyway. i've forwarded this -- and the bug -- to the real zopfli maintainers internally though.)

[Shivam7-1]

Hi @enh-google Okay Thanks 👍

[Shivam7-1]

Hi @lvandeve Could You Please Review Above PR

Thanks & Regards

[lvandeve]

I pulled #198 which does the same, so this now has a conflict. Does #198 solve it?

[Shivam7-1]

I pulled #198 which does the same, so this now has a conflict. Does #198 solve it?
Hi
Yes You are Right both are same
My mistake
Thanks