[Intel-gfx] [PATCH] drm/i915: silence coverity warning

[Chris Wilson]

Quoting Lionel Landwerlin (2017-11-02 11:41:26)
> Because dev_priv is 0-ed it's not currently an issue, but since we
> have dev_priv->perf.oa.test_config.uuid size at uuid + 1, we could
> just copy the null character and silence this warning.

It doesn't copy the nul over exactly, to be complete s/strncpy/strlcpy/
as well.

That should prevent even the simplest of static checkers from warning.
-Chris