fix crash in long address-of

examples/test.p8

@@ -1,33 +1,11 @@
-%import textio
-
 main {
-
     sub start() {
-        ubyte[] array = ['h', 'e', 'l', 'l', 'o', 0]
-        str name = "hello"
-
-        name[5] = '!'       ; don't do this in real code...
-        name[5] = 0
-        name[6] = 99        ; out of bounds
-        name[-1] = 99       ; ok
-        name[-5] = 99       ; ok
-
-        cx16.r0L = name[5]
-        cx16.r1L = name[6]   ; out of bounds
-        cx16.r1L = name[-1]  ; ok
-        cx16.r1L = name[-5]  ; ok
-
-        array[5] = '!'
-        array[5] = 0
-        array[6] = 99        ; out of bounds
-        array[-1] = 99       ; ok
-        array[-5] = 99       ; ok
-        array[-6] = 99       ; ok
-
-        cx16.r0L = array[5]
-        cx16.r1L = array[6]  ; out of bounds
-        cx16.r1L = array[-1] ; ok
-        cx16.r1L = array[-5] ; ok
-        cx16.r1L = array[-6] ; ok
+        const long buffer = 2000
+        const long bufferl = 999999
+        uword @shared addr = &buffer[2]
+        long @shared addr2 = &bufferl[2]
+        const long width = 100
+        uword @shared addr3 = &buffer[width]
+        long @shared addr4 = &bufferl[width]
     }
 }