blktrace: fix missing line return in dprint()

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/blktrace.c b/blktrace.c
index 52f0c71..29eed50 100644
--- a/blktrace.c
+++ b/blktrace.c
@@ -150,7 +150,7 @@
 		 */
 		if (td->o.replay_redirect) {
 			dprint(FD_BLKTRACE, "device lookup: %d/%d\n overridden"
-					" with: %s", maj, min,
+					" with: %s\n", maj, min,
 					td->o.replay_redirect);
 			strcpy(path, td->o.replay_redirect);
 			found = 1;