Get keypress/getkey working for Apple /// properly

src/libsrc/apple/conio.pla

@@ -287,18 +287,16 @@ def a3keypressed
     byte count
 
     dev_status(cmdsys.devcons, 5, @count)
-    if count and !a3keyqueue
+    if count
         a3keyqueue = getc
     fin
-    return a3keyqueue | $80
+    return a3keyqueue ?? a3keyqueue | $80 :: 0
 end
 def a3getkey
     byte keycode
     repeat
         randnum = randnum + 123
-        if !a3keyqueue
-            a3keypressed
-        fin
+        a3keypressed
         keycode = a3keyqueue
     until keycode
     a3keyqueue = 0