From b3deb5342f54a1b09a5d301ae937914320691f2c Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jmvalin@jmvalin.ca>
Date: Tue, 24 Apr 2012 17:00:54 -0400
Subject: [PATCH] Prevents remove_doubling() from considering negative pitch
 gains

---
 celt/pitch.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/celt/pitch.c b/celt/pitch.c
index 5b0cfb6f..29e4bd12 100644
--- a/celt/pitch.c
+++ b/celt/pitch.c
@@ -365,6 +365,7 @@ opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod,
          g = g1;
       }
    }
+   best_xy = MAX32(0, best_xy);
    if (best_yy <= best_xy)
       pg = Q15ONE;
    else