USBI_MUTEX_INITIALIZER   27 third_party/libusb/src/libusb/os/threads_posix.h #define USBI_MUTEX_INITIALIZER		PTHREAD_MUTEX_INITIALIZER
USBI_MUTEX_INITIALIZER   25 third_party/libusb/src/libusb/os/threads_windows.h #define USBI_MUTEX_INITIALIZER  0