As you all know, Lord Krishna is the Supreme Personality of GodHead and everything in this universe (& other universes) are created & destroyed by His wish.
My question is, how can any curse affect Lord Krishna ?
Even the war of Kurukshetra happened because of His wish as He wanted to preach the Bhagavad Gita. Gandhari was not even a demi-god. Then how come her curse got implemented thereby destroying the Yadu dynasty ?