KUALA LUMPUR (Reuters) -Malaysia's state oil firm Petronas said on Saturday an anti-corruption probe into the firm's dealings involving a $90 million project had not found any wrongdoing by the company. "Petronas had given full cooperation to MACC in the investigation that had not found any wrongdoing by Petronas, its employees, and directors," the company said in a statement to Reuters. Petronas said it continues to improve and strengthen its standard operating procedures as part of an effort to prevent and fight all forms of corruption and misconduct