Add missing #include to iccread.c, to fix compile warnings about declarations of memcpy

Bug 561787
diff --git a/iccread.c b/iccread.c
index c1e853d..cfe3d13 100644
--- a/iccread.c
+++ b/iccread.c
@@ -23,6 +23,7 @@
 #include <math.h>
 #include <assert.h>
 #include <stdlib.h>
+#include <string.h>
 #include "qcmsint.h"
 
 typedef uint32_t be32;