fix swap of tree structures

alib2std/src/extensions/forward_tree.hpp

@@ -519,8 +519,8 @@ public:
 	friend void swap ( forward_tree & first, forward_tree & second ) {
 		using std::swap;
-		swap ( std::move ( first.m_data ), std::move ( second.m_data ) );
-		swap ( std::move ( first.m_children ), std::move ( second.m_children ) );
+		swap ( first.m_data, second.m_data );
+		swap ( first.m_children, second.m_children );
 	}
 // ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

alib2std/src/extensions/tree.hpp

@@ -554,9 +554,9 @@ public:
 	friend void swap ( tree & first, tree & second ) {
 		using std::swap;
-		swap ( std::move ( first.m_data ), std::move ( second.m_data ) );
-		swap ( std::move ( first.m_children ), std::move ( second.m_children ) );
-		swap ( std::move ( first.m_parent ), std::move ( second.m_parent ) );
+		swap ( first.m_data, second.m_data );
+		swap ( first.m_children, second.m_children );
+		swap ( first.m_parent, second.m_parent );
 	}
 // ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------