COMP: Missing include

Code/Common/otbAttributesMapLabelObject.h

@@ -19,6 +19,7 @@ PURPOSE.  See the above copyright notices for more information.
 #define __otbAttributesMapLabelObject_h
 
 #include "itkLabelObject.h"
+#include "itkLabelMap.h"
 #include <map>
 
 namespace otb