Add an ignored version of rwlock_destroy() for use when it there's

really no useful way to recover from failure.

src/sbbs3/ssl.c

@@ -270,25 +270,25 @@ static void internal_do_cryptInit(void)
 	if (!rwlock_init(&cert_epoch_lock))
 		return;
 	if (!rwlock_init(&tls_cert_file_date_lock)) {
-		rwlock_destroy(&cert_epoch_lock);
+		rwlock_destroy_ign(&cert_epoch_lock);
 		return;
 	}
 	if (pthread_mutex_init(&ssl_cert_list_mutex, NULL) != 0) {
-		rwlock_destroy(&tls_cert_file_date_lock);
-		rwlock_destroy(&cert_epoch_lock);
+		rwlock_destroy_ign(&tls_cert_file_date_lock);
+		rwlock_destroy_ign(&cert_epoch_lock);
 		return;
 	}
 	if (pthread_mutex_init(&ssl_sess_list_mutex, NULL) != 0) {
 		pthread_mutex_destroy(&ssl_cert_list_mutex);
-		rwlock_destroy(&tls_cert_file_date_lock);
-		rwlock_destroy(&cert_epoch_lock);
+		rwlock_destroy_ign(&tls_cert_file_date_lock);
+		rwlock_destroy_ign(&cert_epoch_lock);
 		return;
 	}
 	if (pthread_mutex_init(&get_ssl_cert_mutex, NULL) != 0) {
 		pthread_mutex_destroy(&ssl_sess_list_mutex);
 		pthread_mutex_destroy(&ssl_cert_list_mutex);
-		rwlock_destroy(&tls_cert_file_date_lock);
-		rwlock_destroy(&cert_epoch_lock);
+		rwlock_destroy_ign(&tls_cert_file_date_lock);
+		rwlock_destroy_ign(&cert_epoch_lock);
 		return;
 	}
 

src/xpdev/rwlockwrap.h

@@ -13,6 +13,7 @@ typedef pthread_rwlock_t rwlock_t;
 #define rwlock_trywrlock(lock) (pthread_rwlock_trywrlock(lock) == 0)
 #define rwlock_unlock(lock) (pthread_rwlock_unlock(lock) == 0)
 #define rwlock_destroy(lock) (pthread_rwlock_destroy(lock) == 0)
+#define rwlock_destroy_ign(lock) ((void)pthread_rwlock_destroy(lock))
 
 #elif defined(_WIN32)