Bug#881130: vorbis-tools: use uninitialized local value as a pointer running oggenc

[Petter Reinholdtsen]

[Joonun Jang]
> bad free while running oggenc with "poc -o output" option

Thank you for the report.  I passed it to #xiph on Freenode, and was
just told by tmatth that a fix is pending in
<URL: https://review.xiph.org/1556/ >.

-- 
Happy hacking
Petter Reinholdtsen