Update tests/pos/i11968.scala

Author: odersky

tests/pos/i11968.scala

@@ -6,5 +6,5 @@ def g = {
     val s: String | Null = ???
     val l = s.length // ok
     val c: C | Null = ???
-    c.get() // error: value get is not a member of C | Null
-}
+    c.get() 
+}