boost::none_t no longer convertible from literal 0 in 1.58

Instead we use boost::none, which has been documented since boost 1.34.0.

1 files changed, 1 insertions, 5 deletions

diff --git a/src/post.h b/src/post.h
index 0fb45e90..3fa67e56 100644
--- a/src/post.h
+++ b/src/post.h
@@ -205,11 +205,7 @@ public:
   mutable optional<xdata_t> xdata_;
 
   bool has_xdata() const {
-#if BOOST_VERSION >= 105600
-    return xdata_ != NULL;
-#else
-    return xdata_;
-#endif
+    return xdata_ != boost::none;
   }
   void clear_xdata() {
     xdata_ = none;