From b15fcf7abb931fcb90aa22c3c17f29240430e389 Mon Sep 17 00:00:00 2001
From: Denys Zadorozhnyi <denys@zadorozhnyi.com>
Date: Thu, 31 Jan 2019 15:17:59 +0200
Subject: [PATCH] fix previous constant preservation on ergo tree
 deserialization;

---
 .../scala/sigmastate/serialization/ErgoTreeSerializer.scala     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/scala/sigmastate/serialization/ErgoTreeSerializer.scala b/src/main/scala/sigmastate/serialization/ErgoTreeSerializer.scala
index e21c19a286..f1d29608f6 100644
--- a/src/main/scala/sigmastate/serialization/ErgoTreeSerializer.scala
+++ b/src/main/scala/sigmastate/serialization/ErgoTreeSerializer.scala
@@ -29,9 +29,9 @@ class ErgoTreeSerializer {
 
   def deserializeErgoTree(r: SigmaByteReader): ErgoTree  = {
     val (h, cs) = deserializeHeader(r)
+    val previousConstantStore = r.constantStore
     r.constantStore = new ConstantStore(cs)
     // reader with constant store attached is required (to get tpe for a constant placeholder)
-    val previousConstantStore = r.constantStore
     val root = ValueSerializer.deserialize(r)
     r.constantStore = previousConstantStore
     ErgoTree(h, cs, root)