Fixed initialization issue.

It was causing the server side to mess up after the first test.

src/iperf_api.c

@@ -1516,6 +1516,7 @@ iperf_reset_test(struct iperf_test *test)
 	tmr_cancel(test->reporter_timer);
 	test->reporter_timer = NULL;
     }
+    test->done = 0;
 
     SLIST_INIT(&test->streams);
 

src/iperf_server_api.c

@@ -247,6 +247,7 @@ iperf_test_reset(struct iperf_test *test)
 	tmr_cancel(test->reporter_timer);
 	test->reporter_timer = NULL;
     }
+    test->done = 0;
 
     SLIST_INIT(&test->streams);