testsuite: Update and un-xfail unsafe-fn-autoderef

Author: catamorphism

src/test/compile-fail/unsafe-fn-autoderef.rs

@@ -9,9 +9,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// xfail-test
-type rec = {f: int};
-fn f(p: *rec) -> int {
+struct Rec {
+    f: int
+}
+
+fn f(p: *Rec) -> int {
 
     // Test that * ptrs do not autoderef.  There is a deeper reason for
     // prohibiting this, beyond making unsafe things annoying (which doesn't
@@ -25,7 +27,7 @@ fn f(p: *rec) -> int {
     // are prohibited by various checks, such as that the enum is
     // instantiable and so forth).
 
-    return p.f; //~ ERROR attempted access of field `f` on type `*rec`
+    return p.f; //~ ERROR attempted access of field `f` on type `*Rec`
 }
 
 fn main() {