replace wimpy get64 by powerful LONG_LONG :-)
diff --git a/mem.c b/mem.c
index 85f80a1..92526cd 100644
--- a/mem.c
+++ b/mem.c
@@ -275,7 +275,7 @@
 		/* fd */
 		tprintf(", %ld, ", u_arg[4]);
 		/* offset */
-		tprintf("%#llx", get64(u_arg[5], u_arg[6]));
+		tprintf("%#llx", LONG_LONG(u_arg[5], u_arg[6]));
 	}
 	return RVAL_HEX;
 }