c99: c99_compat.h guard `__STDC_VERSION__` with defined(__STDC_VERSION__)
Judge STDC_VERSION more reliably in c99_compat.h Update the comment to match with the guard
Signed-off-by: Yonggang Luo luoyonggang@gmail.com
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Judge STDC_VERSION more reliably in c99_compat.h Update the comment to match with the guard
Signed-off-by: Yonggang Luo luoyonggang@gmail.com