convert the barrier pshared option back to 0/1 values when getting it

[musl] / src / thread / pthread_barrierattr_getpshared.c

#include "pthread_impl.h"

int pthread_barrierattr_getpshared(const pthread_barrierattr_t *a, int *pshared)
{
        *pshared = !!*a;
        return 0;
}