libsepol: Fix error path in mls_semantic_level_expand().

If the level contains a category that is not associated with a sensitivity,
the code correctly detects the condition, but does not return an error.

Signed-off-by: Chris PeBenito <cpebenito@tresys.com>
Acked-by: Steve Lawrence <slawrence@tresys.com>
1 file changed