variant: include bits/move.h for std::addressof.

2016-09-05  Tim Shen  <timshen@google.com>

	* include/std/variant: include bits/move.h for std::addressof.

From-SVN: r240001

libstdc++-v3/ChangeLog

+2016-09-05  Tim Shen  <timshen@google.com>
+
+	* include/std/variant: include bits/move.h for std::addressof.
+
 2016-09-05  Mikhail Strelnikov  <mikhail.strelnikov@gmail.com>
 
 	* include/std/variant (_Variant_storage::_M_storage()): Use std::addressof

libstdc++-v3/include/std/variant

@@ -38,6 +38,7 @@
 #include <type_traits>
 #include <utility>
 #include <bits/enable_special_members.h>
+#include <bits/move.h>
 #include <bits/uses_allocator.h>
 
 namespace std _GLIBCXX_VISIBILITY(default)