 About the duplicate name of the mutex.h file in the Zbar in the mutex.h file and other third-party libraries

Such as the title, in the process of integrating react-native to the project, found in the Pod glog third-party dependencies, there is a conflict between the mutex.h file and the mutex.h file in Zbar, resulting in a compilation failure, after I temporarily remove Zbar, the project runs Success, there are other ways to avoid this problem of class name conflicts.
