Remove the screw on the top right side of the closet door that is not functioning correctly. Use a Phillips head screwdriver and rotate the screw counter clockwise until it falls out. You might want to use a stepladder to do this if you can't reach easily.

Reminder Be sure to put the screws where you can find them again! I suggest using a bowl or a cup. You will need the screws again later.

Do the same to the top left side of the closet door.