From cab438efcb6fb001ec981a52d99f7267634944dc Mon Sep 17 00:00:00 2001
From: Ignotus Peverell <igno.peverell@protonmail.com>
Date: Thu, 20 Dec 2018 13:52:45 -0800
Subject: [PATCH] Fix get_header_for_output for genesis (#2192)

---
 chain/src/chain.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/chain/src/chain.rs b/chain/src/chain.rs
index 70ab100ec..97e86ea9d 100644
--- a/chain/src/chain.rs
+++ b/chain/src/chain.rs
@@ -1139,6 +1139,9 @@ impl Chain {
 		loop {
 			let search_height = max - (max - min) / 2;
 			let h = txhashset.get_header_by_height(search_height)?;
+			if search_height == 0 {
+				return Ok(h);
+			}
 			let h_prev = txhashset.get_header_by_height(search_height - 1)?;
 			if pos > h.output_mmr_size {
 				min = search_height;