Replace the malloc.h header with stdlib.h.

--- src/canyondelay.cpp.orig	Mon Nov  3 22:53:07 2014
+++ src/canyondelay.cpp	Mon Nov  3 22:55:50 2014
@@ -25,7 +25,7 @@
 /*****************************************************************************/
 
 
-#include <malloc.h>
+#include <stdlib.h>
 #include <math.h>
 #include "cmt.h"
 
