Doesn't look bad...
Even if the WHOLE CASE was made of real wood, it wouldn't be a fire hazard. Your PC would fry FAR before the wood would get to the point of combustion. Paper bursts into flames at 451* F. Even if it was a closed system with NO ventilation, the components would burn out before igniting the wood.... PLUS, there would be a lack of oxygen to allow a fire to burn. If there ar events, there is oxygen, but the heat is being blown out of the case.