crypt: fix the prototype of md5_sum, sha256_sum and sha512_sum

[musl] / src / thread / pthread_mutex_init.c

#include "pthread_impl.h"

int pthread_mutex_init(pthread_mutex_t *restrict m, const pthread_mutexattr_t *restrict a)
{
        *m = (pthread_mutex_t){0};
        if (a) m->_m_type = *a & 7;
        return 0;
}