px4源码中mutex的问题

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../../src/modules/commander/Commander.cpp:81:52: error: too few arguments to function 'int pthread_mutex_init(pthread_mutex_t*, const pthread_mutexattr_t*)'
   81 | pthread_mutex_t _status_mutex = pthread_mutex_init();
      |                                                    ^
compilation terminated due to -Wfatal-errors.

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pthread_mutex_t _status_mutex;
  pthread_mutex_init(&_status_mutex, NULL);