[analyzer] Fix RUN lines for old XFAIL tests, one of which actually works.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@156921 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Analysis/reference.cpp b/test/Analysis/reference.cpp
index 5897e68..e80952b 100644
--- a/test/Analysis/reference.cpp
+++ b/test/Analysis/reference.cpp
@@ -1,11 +1,10 @@
 // RUN: %clang_cc1 -analyze -analyzer-checker=core,experimental.core -analyzer-store=region -analyzer-constraints=range -verify -Wno-null-dereference %s
-// XFAIL
 
 typedef typeof(sizeof(int)) size_t;
 void malloc (size_t);
 
 void f1() {
-  int const &i = 3;  // <--- **FIXME** This is currently not being modeled correctly.
+  int const &i = 3;
   int b = i;
 
   int *p = 0;