From 282b40249e158376fcc4682879be40fb80c4e36f Mon Sep 17 00:00:00 2001
From: Andre Bogus <bogusandre@gmail.com>
Date: Tue, 16 May 2017 09:21:30 +0200
Subject: [PATCH] (hopefully) fix pprust error

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

diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
index bdb4ce34b91..83c289ff80b 100644
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -961,9 +961,11 @@ pub fn commasep_cmnt<T, F, G>(&mut self,
     {
         self.rbox(0, b)?;
         let len = elts.len();
-        for (i, elt) in elts.iter().enumerate() {
+        let mut i = 0;
+        for elt in elts {
             self.maybe_print_comment(get_span(elt).hi)?;
             op(self, elt)?;
+            i += 1;
             if i < len {
                 word(&mut self.s, ",")?;
                 self.maybe_print_trailing_comment(get_span(elt),
-- 
2.44.0