Qualify another call in <variant>

	* include/std/variant (__erased_dtor): Qualify call to __get.

From-SVN: r260900

libstdc++-v3/ChangeLog

+2018-05-29  Jonathan Wakely  <jwakely@redhat.com>
+
+	* include/std/variant (__erased_dtor): Qualify call to __get.
+
 2018-05-27  François Dumont  <fdumont@gcc.gnu.org>
 
 	* include/bits/stl_tree.h (_Rb_tree_impl(_Node_allocator&&)): New.

libstdc++-v3/include/std/variant

@@ -249,7 +249,7 @@ namespace __variant
   template<typename _Variant, size_t _Np>
     void
     __erased_dtor(_Variant&& __v)
-    { std::_Destroy(std::__addressof(__get<_Np>(__v))); }
+    { std::_Destroy(std::__addressof(__variant::__get<_Np>(__v))); }
 
   template<typename _Lhs, typename _Rhs>
     void