Bugfix 4424

When using the button in a RenderLayer node to render a single node, the
new 'render to fullscreen' crashed in end. Reason; the node editor was
still handling events after a render, as if the node editor was still open.

source/blender/src/header_node.c

@@ -200,7 +200,7 @@ void do_node_addmenu(void *arg, int event)
 	areamouseco_to_ipoco(G.v2d, mval, &locx, &locy);
 	node_add_node(snode, event, locx, locy);
 	
-	addqueue(curarea->win, B_NODE_TREE_EXEC, 1);
+	addqueue(curarea->win, UI_BUT_EVENT, B_NODE_TREE_EXEC);
 	
 	BIF_undo_push("Add Node");