use weak aliases rather than function pointers to simplify some code

[musl] / src / thread / pthread_setcanceltype.c

#include "pthread_impl.h"

int pthread_setcanceltype(int new, int *old)
{
        struct pthread *self = pthread_self();
        if (new > 1U) return EINVAL;
        if (old) *old = self->cancelasync;
        self->cancelasync = new;
        return 0;
}