asar-tests: fix build with musl

[orbea]

Trivial build fix for musl systems, this is a standard header and it should be safe to include everywhere even if the libc implicitly includes it already.

src/asar-tests/test.cpp: In function 'int main(int, char**)':
src/asar-tests/test.cpp:958:57: error: 'int64_t' was not declared in this scope
  958 |          test_status &= (int64_t)asar_math("1+0", &error_buffer) == 1;
      |                          ^~~~~~~

[randomdude999]

same comment as the other tests PR

ughhhhhh okay i don't know how to use github i guess. i'll cherry-pick this into 1.9 manually

[orbea]

ughhhhhh okay i don't know how to use github i guess. i'll cherry-pick this into 1.9 manually

The failure only happens with asar_2_beta fwiw.

[randomdude999]

well i suppose i better get on with deleting that code then

interestingly, we do have CI running on my raspberry pi with alpine, which uses musl, so it's weird that it didn't show up there (maybe gcc still uses glibc headers or something??)

[orbea]

That is strange, I have musl 1.2.4 so maybe its a difference in the version? Regardless int64_t is clearly defined as requiring stdint.h/cstdint.

https://pubs.opengroup.org/onlinepubs/009695399/basedefs/stdint.h.html