Fix comparison of callables

[DarkMessiah]

There was a mistake in the conditions that made it impossible to compare callables.

Is it worth adding an argument comparison?

if (a->binds != b->binds) {
     return false
}

because

func foo(): pass

func _ready():
    var a = foo.bind(1)
    var b = foo.bind("a")
    print(a == b) # will be true if we don't compare arguments

[AThousandShips]

Is it worth adding an argument comparison?

This would break compatibility and a lot of existing code, so can't be done now, maybe for 5.0

[akien-mga]

Makes sense to me.

[Repiteo]

Thanks!