Mark usage function as __dead2 in programs where it does not return
In most cases, usage does not return, so mark them as __dead2. For the cases where they do return, they have not been marked __dead2. Reviewed by: imp Pull Request: https://github.com/freebsd/freebsd-src/pull/735
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@ -54,7 +54,7 @@ static void sigsys_handler(int);
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static void sigchld_handler(int);
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static void cleanup(void);
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static void receiver(void);
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static void usage(void);
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static void usage(void) __dead2;
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static const char *m_str = "The quick brown fox jumped over the lazy dog.";
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