Using << on an int8_t or uint8_t will output a character rather than a number.

Places that do this need to cast to int to get the desired behavior.

BUG=none
TEST=none
R=henrik.lundin@webrtc.org, pthatcher@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/40579004

Cr-Commit-Position: refs/heads/master@{#8223}
git-svn-id: http://webrtc.googlecode.com/svn/trunk@8223 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/rtp_rtcp/source/rtp_receiver_audio.cc

@@ -278,7 +278,7 @@ int32_t RTPReceiverAudio::InvokeOnInitializeDecoder(
                                           specific_payload.Audio.channels,
                                           specific_payload.Audio.rate)) {
     LOG(LS_ERROR) << "Failed to create decoder for payload type: "
-                  << payload_name << "/" << payload_type;
+                  << payload_name << "/" << static_cast<int>(payload_type);
     return -1;
   }
   return 0;