cmd/relnote: ignore unmerged CLs

Change-Id: Ie76e8c11663b0092bae5f842d40e81b964e767d0
Reviewed-on: https://go-review.googlesource.com/45781
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
diff --git a/cmd/relnote/relnote.go b/cmd/relnote/relnote.go
index db771be..9f757a5 100644
--- a/cmd/relnote/relnote.go
+++ b/cmd/relnote/relnote.go
@@ -64,6 +64,9 @@
 			return nil
 		}
 		gp.ForeachCLUnsorted(func(cl *maintner.GerritCL) error {
+			if cl.Status != "merged" {
+				return nil
+			}
 			relnote := clRelNote(cl)
 			if relnote == "" ||
 				bytes.Contains(existingHTML, []byte(fmt.Sprintf("CL %d", cl.Number))) {