From a3977690641f136dcf2dbc183f77de3b3cdcca99 Mon Sep 17 00:00:00 2001
From: Jimmy Hu <jimmy.hu@dexon.org>
Date: Sat, 30 Mar 2019 00:38:41 +0800
Subject: dex: fix a panic (#317)

---
 dex/blockproposer.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dex/blockproposer.go b/dex/blockproposer.go
index 65f9f9e30..846e65617 100644
--- a/dex/blockproposer.go
+++ b/dex/blockproposer.go
@@ -199,9 +199,9 @@ ListenLoop:
 		select {
 		case ev := <-ch:
 			blocks := blocksToSync(coreHeight, ev.Block.NumberU64())
-			b.watchCat.Feed(blocks[len(blocks)-1].Position)
 
 			if len(blocks) > 0 {
+				b.watchCat.Feed(blocks[len(blocks)-1].Position)
 				log.Debug("Filling compaction chain", "num", len(blocks),
 					"first", blocks[0].Finalization.Height,
 					"last", blocks[len(blocks)-1].Finalization.Height)
-- 
cgit