Correct test to use Unsigned version of function

Jan Breuer

2015-10-04 4133f2d8ba0d49c6d9a6a93650a81743aef81fa4

 examples/test-tcp/main.c

@@ -44,6 +44,7 @@
#include <sys/ioctl.h>
#include <errno.h>
#include <arpa/inet.h>
#include <unistd.h>

#include "scpi/scpi.h"
#include "../common/scpi-def.h"