Screws on latch on fire door came loose

[tfwoodroofMCS]

Two screws on the latch on the fire door to the balcony had come loose. This made the door hard to open (even when ajar) from the inside or the outside.

I've screwed the screws back in and tightened the others, and the latch now works, but I thought it was worth documenting in case it needs someone to take a closer look.