From 261c9a144621dae1b53583fd757495de97d85d05 Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Wed, 17 Jun 2015 17:18:26 -0400
Subject: [PATCH] remove unnecessary counter

---
 src/normalize/macro_expand/mod.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/normalize/macro_expand/mod.rs b/src/normalize/macro_expand/mod.rs
index 3f7cbd7..2318d9e 100644
--- a/src/normalize/macro_expand/mod.rs
+++ b/src/normalize/macro_expand/mod.rs
@@ -49,8 +49,6 @@ impl MacroExpander {
     fn expand(&mut self, items: &mut Vec<GrammarItem>) -> NormResult<()> {
         let mut counter = 0;
         loop {
-            let old_expansions = self.expansion_set.len();
-
             println!("Next round: counter={} items.len()={}",
                      counter, items.len());
 
@@ -62,7 +60,7 @@ impl MacroExpander {
             counter = items.len();
 
             // No more expansion to do.
-            if self.expansion_set.len() == old_expansions {
+            if self.expansion_stack.is_empty() {
                 return Ok(());
             }