drm/i915: Prevent uninitialised reads during error state capture

error_bo and pinned_bo could be used uninitialised if there were no
active buffers.

Caught by kmemcheck.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2011-01-24 12:34:00 +00:00
commit 8e934dbf26