A soldering pick tool. It has two tapered steel ends, each with a different bend, and is a lot like the bottom tool in this assortment:
https://www.mpja.com/6-Piece-Set-of-Soldering-Tools/productinfo/35665 TL/ You might also try finding a straight tool with a small notch in it, like a crochet hook, or filing a notch in the side of a small screwdriver. A spring-hook (used for repairing woodwind musical instruments) is sort of like that. This is a very common repair and a camera shop that does repairs (if there are any) could probably do it in a few minutes.