Function malloc

tests/profile/json_memory_profile.cpp:179–188

extern "C" {

void* malloc(size_t size) {
#ifdef _WIN32
    init_real_allocators();
#endif
    void* ptr = real_malloc(size);
    if (g_tracking_enabled) {
        g_stats.on_malloc(ptr, size);
    }
    return ptr;
}

void* calloc(size_t n, size_t size) {
#ifdef _WIN32