Prevents remove_doubling() from considering negative pitch gains

diff --git a/celt/pitch.c b/celt/pitch.c
index 5b0cfb6..29e4bd1 100644 (file)
--- 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