Nah theres just no process for undoing your submission.
It doesn’t matter when it’s decremented if you can’t interrupt the process, anyway.
In a code sense we pause for input, feed it to the wishmaker function, and pause until the thread returns, then decrement.
We could decrement first, also, but neither violates the rules.
Genie in the OP image would’ve said “OK you now have 0 wishes”.
Since he said 255, my interpretation is a valid solution.
Of course, if we’re talking hypothetical wish gaining prevention methods, I’d just have a check before,
previous_wishes = wishes;
{Do all the wish things. wishes ends up with a 255 because of our shenanigans}
If(wishes>=previous_wishes) wishes = previous_wishes-1;
;If the current number of wishes isnt less than the old number of wishes, set it to the old number and subtract 1
If(wishes==0) {/*TODO: write function to end wish giving sequence*/}