Fix the build with MSVC 2013, still cannot default move ctors yet

Ten days.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283394 91177308-0d34-0410-b5e6-96231b3b80d8

Author: rnk

unittests/ADT/STLExtrasTest.cpp

@@ -136,7 +136,8 @@ template <> struct CanCopy<false> {
   CanCopy(const CanCopy &) = delete;
 
   CanCopy() = default;
-  CanCopy(CanCopy &&) = default;
+  // FIXME: Use '= default' when we drop MSVC 2013.
+  CanCopy(CanCopy &&) {};
 };
 
 template <bool Moveable, bool Copyable>