Fix off-by-one buffer overflow in WebRtcNetEQ_PacketBufferInsert().

BUG=1725
R=tina.legrand@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1395004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@3953 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/neteq/packet_buffer.c b/webrtc/modules/audio_coding/neteq/packet_buffer.c
index 83079d7..a542333 100644
--- a/webrtc/modules/audio_coding/neteq/packet_buffer.c
+++ b/webrtc/modules/audio_coding/neteq/packet_buffer.c
@@ -324,8 +324,8 @@
     {
         /* Payload is 16-bit aligned => just copy it */
 
-        WEBRTC_SPL_MEMCPY_W16(bufferInst->currentMemoryPos,
-            RTPpacket->payload, (RTPpacket->payloadLen + 1) >> 1);
+        WEBRTC_SPL_MEMCPY_W8(bufferInst->currentMemoryPos,
+            RTPpacket->payload, RTPpacket->payloadLen);
     }
     else
     {