Convert left-over manual ->runstate setting to td_set_runstate()

Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
diff --git a/fio.h b/fio.h
index 4b6fb9f..6ad186f 100644
--- a/fio.h
+++ b/fio.h
@@ -666,7 +666,7 @@
 	if (!(cond)) {			\
 		int *__foo = NULL;	\
 		fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond);	\
-		(td)->runstate = TD_EXITED;	\
+		td_set_runstate((td), TD_EXITED);	\
 		(td)->error = EFAULT;		\
 		*__foo = 0;			\
 	}	\