Bug#699722: src:libav: x264 decoding crashes

[Dmitry Smirnov]

Xpra upstream commented on issue [1]:

	Confirmed as a libav bug, I was seeing memory allocation these errors on
	mac osx:
		Non-aligned pointer being freed

	as per
		http://stackoverflow.com/questions/4055277/non-aligned-pointer-being-freed-on-mac

	Downgrading to libav 0.8.5 fixes the issue,

	Not an xpra bug, closing.

[1]: https://www.xpra.org/trac/ticket/244#comment:5