port to python3

check_openvpn

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Check if an OpenVPN server runs on a given UDP or TCP port.
 #
@@ -40,11 +40,11 @@ HMAC_CLIENT_KEY_START = 192
 BUFFER_SIZE = 1024
 
 def ok(msg):
-    print 'OK: %s' % msg
+    print('OK: %s' % msg)
     return 0
 
 def critical(msg):
-    print 'CRIT: %s' % msg
+    print('CRIT: %s' % msg)
     return 2
 
 def buildpacket(tcp, key, digestmod):