Fix terse output with description set

I have seen that using 2.05 version of fio the terse output formatting
has an issue when there is a text description given in the test file.
There is no newline separating the description and the next job stats.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/stat.c b/stat.c
index fa9af7c..e72148b 100644
--- a/stat.c
+++ b/stat.c
@@ -786,7 +786,7 @@
 
 	/* Additional output if description is set */
 	if (strlen(ts->description))
-		log_info(";%s", ts->description);
+		log_info(";%s\n", ts->description);
 }
 
 static void show_thread_status_terse(struct thread_stat *ts,