added missing header

diff --git a/otk/widget.cc b/otk/widget.cc
index 7c500a8336ab14e99bc060468b5f72b8908e4579..7a8a390b828a7bf174a63d2ccaa94b1b8362dede 100644 (file)
--- a/otk/widget.cc
+++ b/otk/widget.cc
@@ -3,6 +3,8 @@
 #include "assassin.hh"
 #include "screeninfo.hh"
 
+#include <algorithm>
+
 namespace otk {
 
 OtkWidget::OtkWidget(OtkWidget *parent, Direction direction)