Fix #77 build on FreeBSD 10

src/sysinfo.cc

@@ -21,9 +21,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/resource.h>
+#include <sys/types.h>
 #include <sys/sysctl.h>
 #include <sys/time.h>
-#include <sys/types.h>
 #include <unistd.h>
 
 #include <iostream>