[automerger] Init gain config to prevent uninit leak. am: ebe0777edc am: 1f39e79a73 am: f57d4e10ef am: 3fc94f3a7f am: e279da4090 am: 7a41b25ce7 am: 3c5a6f0638 am: 8eb9eb44d1 am: deecb6ecad

Change-Id: Ib93a4df9e8a0a87506968013ead667785901df66
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
index 6ed2cb7..4be4ac7 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioPort.cpp
@@ -385,6 +385,7 @@
     mSamplingRate = 0;
     mChannelMask = AUDIO_CHANNEL_NONE;
     mFormat = AUDIO_FORMAT_INVALID;
+    memset(&mGain, 0, sizeof(struct audio_gain_config));
     mGain.index = -1;
 }