pthread/cond: fix compile break

N/A

Change-Id: Ia22d7c2039cc7b5e93646037d6072248eabcbe36
Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>

libs/libc/pthread/pthread_conddestroy.c

@@ -79,9 +79,10 @@ int pthread_cond_destroy(FAR pthread_cond_t *cond)
     }
 
   /* Destroy the semaphore contained in the structure */
+
   else
     {
-      ret = sem_get_value(&cond->sem, &sval);
+      ret = sem_getvalue(&cond->sem, &sval);
       if (ret < 0)
         {
           ret = -ret;