Thomas Wood 0269d1da49 lib: fix signed/unsigned comparison issues
Store the result of set_vt_mode as a signed value so that errors can be
caught correctly.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-02-06 18:32:12 +01:00
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