fixed sysmalloc_int_free.c MALLOC_ALIGN

[gfelber]

sry to bump this put i saw you modified sysmalloc_int_free.c ae4dbf5 4ed6f19

<< #define MALLOC_ALIGN 0x10L
>> #define MALLOC_ALIGN (SIZE_SZ*2)

i believe this happened because you merged the 2.23 example with the others,
but this breaks the showcase for x86 (32 bit), so maybe revert theses changes if possible?
in some earlier heap version glibc changed their heap alignment on x86 (32bit) to always be 0x10 (and not SIZE_SZ*2)
https://elixir.bootlin.com/glibc/glibc-2.39/source/sysdeps/i386/malloc-alignment.h#L22
this wasn't true for 2.23, that's why this version was slightly different
https://elixir.bootlin.com/glibc/glibc-2.23/source/malloc/malloc.c#L353

[gfelber]

heap alignment on x86 (32bit) seems to have been changed to 0x10 since 2.26
https://elixir.bootlin.com/glibc/glibc-2.26/source/sysdeps/i386/malloc-alignment.h#L22

[Kyle-Kyle]

Good to learn about that. My knowledge about 32bit heap didn't get updated and thought it was always SIZE_SZ*2. my bad. Thank you for the correction!