From a7a9656ac74c1652ed0a3ff98435f4bd067d5eef Mon Sep 17 00:00:00 2001
From: Stephen Birarda <commit@birarda.com>
Date: Fri, 6 Jun 2014 11:47:34 -0700
Subject: [PATCH] add a mixer crash guard in addSilentFrame

---
 libraries/audio/src/PositionalAudioRingBuffer.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/audio/src/PositionalAudioRingBuffer.cpp b/libraries/audio/src/PositionalAudioRingBuffer.cpp
index 94a88897e3..555c3d937d 100644
--- a/libraries/audio/src/PositionalAudioRingBuffer.cpp
+++ b/libraries/audio/src/PositionalAudioRingBuffer.cpp
@@ -55,7 +55,9 @@ int PositionalAudioRingBuffer::parseData(const QByteArray& packet) {
         
         readBytes += sizeof(int16_t);
         
-        addSilentFrame(numSilentSamples);
+        if (numSilentSamples > 0) {
+            addSilentFrame(numSilentSamples);
+        }        
     } else {
         // there is audio data to read
         readBytes += writeData(packet.data() + readBytes, packet.size() - readBytes);