Use correct type for OutputDescriptor::format

Change-Id: Ide608ef452d57da29b708180d90470361c123d1d
diff --git a/media/libmedia/IAudioFlingerClient.cpp b/media/libmedia/IAudioFlingerClient.cpp
index 84a589a..3c0d4cf 100644
--- a/media/libmedia/IAudioFlingerClient.cpp
+++ b/media/libmedia/IAudioFlingerClient.cpp
@@ -83,7 +83,7 @@
                 ALOGV("STREAM_CONFIG_CHANGED stream %d", stream);
             } else if (event != AudioSystem::OUTPUT_CLOSED && event != AudioSystem::INPUT_CLOSED) {
                 desc.samplingRate = data.readInt32();
-                desc.format = data.readInt32();
+                desc.format = (audio_format_t) data.readInt32();
                 desc.channelMask = (audio_channel_mask_t) data.readInt32();
                 desc.frameCount = data.readInt32();
                 desc.latency = data.readInt32();