Testing istype(A) && A.B, A?.B, A && A.b

test.dm

@MoMMIv2#3484
```
/proc/main()
    set background = 1
    var/t1
    var/t2

    var/const/loops = 200000

    var/time1 = world.timeofday 
    for(var/i in 1 to loops)
        // INSERT TEST CODE HERE
    t1 = world.timeofday-time1
    world.log << "1: [t1]"

    var/time2 = world.timeofday
    for(var/i in 1 to loops)
        // INSERT TEST CODE HERE
    t2 = world.timeofday-time2
    world.log << "2: [t2]"
```