From cb0f1c3435c99da08737fac078272880f2e242f8 Mon Sep 17 00:00:00 2001
From: Mazdak Farrokhzad <twingoow@gmail.com>
Date: Thu, 14 Jun 2018 17:28:22 +0200
Subject: [PATCH] Fix nightly regression due to stabilization of
 Iterator::flatten, see https://github.com/rust-lang/rust/pull/51511

---
 src/payment_request.rs | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/payment_request.rs b/src/payment_request.rs
index 614e461..25029c2 100644
--- a/src/payment_request.rs
+++ b/src/payment_request.rs
@@ -198,14 +198,14 @@ impl PaymentRequest {
 
     /// Return the extra routing info.
     pub fn routing_info(&self) -> Vec<ExtraHop> {
-        self.tags
-            .iter()
-            .filter_map(|v| match *v {
-                Tag::RoutingInfo { ref path } => Some(path.to_owned()),
-                _ => None,
-            })
-            .flatten()
-            .collect_vec()
+        Itertools::flatten(
+            self.tags
+                .iter()
+                .filter_map(|v| match *v {
+                    Tag::RoutingInfo { ref path } => Some(path.to_owned()),
+                    _ => None,
+                })
+         ).collect_vec()
     }
 
     /// Return the min_final_cltv_expiry if any.