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9bb11ba511
In the command-line argument initialization code, remove the Mutex around the `ARGV` and `ARGC` variables, and simply check whether ARGV is non-null before dereferencing it. This way, if either of ARGV or ARGC is not initialized, we'll get an empty argument list. This allows simple cdylibs to avoid having `pthread_mutex_lock`/`pthread_mutex_unlock` appear in their symbol tables if they don't otherwise use threads.