default to one iteration in varnishtest

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@3277 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/vtc.c

@@ -331,7 +331,7 @@ usage(void)
 int
 main(int argc, char * const *argv)
 {
-	int ch, i, ntest;
+	int ch, i, ntest = 1;
 	FILE *fok;
 	static struct vtclog	*vl;