Fix two redefinitions in test cases that weren't diagnosed yet, but will be soon.

llvm-svn: 94565
diff --git a/clang/test/SemaCXX/nested-name-spec.cpp b/clang/test/SemaCXX/nested-name-spec.cpp
index 8618f03..dbbf1fe 100644
--- a/clang/test/SemaCXX/nested-name-spec.cpp
+++ b/clang/test/SemaCXX/nested-name-spec.cpp
@@ -212,7 +212,7 @@
 // non-lexical scope.
 namespace test2 {
   namespace ns {
-    int *count_ptr;
+    extern int *count_ptr;
   }
   namespace {
     int count = 0;