From a290057ff634f73f9c97f56a051287c8d5f792bc Mon Sep 17 00:00:00 2001
From: Michael Vines <mvines@gmail.com>
Date: Wed, 10 Oct 2018 10:40:23 -0700
Subject: [PATCH] Avoid panic when account.source is None

---
 src/token_program.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/token_program.rs b/src/token_program.rs
index b5c1e8ec76880c..71ea16c6182642 100644
--- a/src/token_program.rs
+++ b/src/token_program.rs
@@ -327,7 +327,9 @@ impl TokenProgram {
                 Err(Error::InvalidArgument)?;
             }
 
-            if Some(&delegate_account.source.unwrap()) != tx.key(pix, 1) {
+            if delegate_account.source.is_none()
+                || Some(&delegate_account.source.unwrap()) != tx.key(pix, 1)
+            {
                 info!("account 2 is not a delegate of account 1");
                 Err(Error::InvalidArgument)?;
             }