[Bug 727746] Factor buffer flags-to-string code

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727746
  GStreamer | gstreamer (core) | git

--- Comment #8 from Tim-Philipp Müller <t.i.m at zen.co.uk> 2014-04-17 08:22:27 UTC ---
Not really, I think that's even more ugly :)

I can live with patch #3, the first two are obsolete then I guess.

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