K-ballo pointed out *another* mistype in my change

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@217936 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/istream b/include/istream
index 47631ba..168a4d0 100644
--- a/include/istream
+++ b/include/istream
@@ -198,13 +198,14 @@
 #endif
     void swap(basic_istream& __rhs);
 
+#if _LIBCPP_STD_VER > 11
 #ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
     basic_istream           (const basic_istream& __rhs) = delete;
     basic_istream& operator=(const basic_istream& __rhs) = delete;
 #else
-private:
-    basic_istream           (const basic_istream& __rhs);
-    basic_istream& operator=(const basic_istream& __rhs);
+    basic_istream           (const basic_istream& __rhs); // not defined
+    basic_istream& operator=(const basic_istream& __rhs); // not defined
+#endif
 #endif
 public: