[Bug 725632] v4l2: Normalise control names in the same way as v4l2-ctl

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=725632
  GStreamer | gst-plugins-good | 1.2.3

Nicolas Dufresne <nicolas.dufresne> changed:

           What    |Removed                     |Added
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                 CC|                            |nicolas.dufresne at collabora.
                   |                            |co.uk

--- Comment #5 from Nicolas Dufresne <nicolas.dufresne at collabora.co.uk> 2014-03-04 14:03:58 UTC ---
This was a typo, I mean a *bug*. The previous bug was that some uninitialized
data could be seen between the last character and the 0 character.

You don't need it in your patch because you do this now, outside of your loop:
+        control.name[i++] = '\0';

Also, i cannot be bigger then 31, as the algo can only shorten the string,
though you could add some safety here in case the driver don't set the 0
character.

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