GUACAMOLE-422: Fix assignment of protocol version value in socket.

guacamole-common/src/main/java/org/apache/guacamole/protocol/ConfiguredGuacamoleSocket.java

@@ -155,6 +155,7 @@ public class ConfiguredGuacamoleSocket implements GuacamoleSocket {
             if (i == 0 && arg_name.startsWith("VERSION_")) {
                 protocol = GuacamoleProtocolVersion.valueOf(arg_name);
                 arg_values[i] = protocol.toString();
+                continue;
             }
 
             // Get defined value for name