cpuinfo_get_current_core() return NULL on mac (intel chip)

• OS: macOSX 12.4

(base) ➜  cpuinfo git:(master) uname -a
Darwin ZZ-MBP.local 21.5.0 Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:22 PDT 2022; root:xnu-8020.121.3~4/RELEASE_X86_64 x86_64

• cpuinfo commit:

  * 5e63739 2022-07-18 | Add bazel support for iOS arm64 simulator (#105) (HEAD -> master, origin/master, origin/HEAD) [Keith 
   Smiley]
  

• Reproduce

#include <stdio.h>
#include "cpuinfo.h"

int main()
{
    cpuinfo_initialize();

    const cpuinfo_core* core = cpuinfo_get_current_core();
    printf("core is %p\n", core);

    cpuinfo_deinitialize();

    return 0;
}

• Expected behaviour
  The print value of core should be not "0x0"
• The actual output

core is 0x0

Start by running the provided cpuinfo_get_current_core() reproducer on macOS 12.4 with an Intel chip, then trace the macOS x86_64 path used by that entry point. Done means cpuinfo_initialize() followed by cpuinfo_get_current_core() returns a non-NULL core pointer in this environment.