Fix theoretical one-byte buffer overrun

GitHub pull_request - opened <[email protected]>
Newsgroups org.alsa-project.alsa-devel
Message-ID <[email protected]> 
alsa-project/alsa-lib pull request #509 was opened from dirkmueller:

If 64 (sizeof(buf))= or more characters were provided in the input string, this unconditionally writes a null byte to `buf[64]`, which is one byte past the end of the array.

Request URL   : https://github.com/alsa-project/alsa-lib/pull/509
Patch URL     : https://github.com/alsa-project/alsa-lib/pull/509.patch
Repository URL: https://github.com/alsa-project/alsa-lib
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