Initialize the pcm_config struct before pcm_open.
am: 269fa0b97c

Change-Id: Ia6430bee62104d9f7bc1d343905dffc46f5deb28
diff --git a/audio/soundtrigger/sound_trigger_hw.c b/audio/soundtrigger/sound_trigger_hw.c
index 035a5b6..2f76956 100644
--- a/audio/soundtrigger/sound_trigger_hw.c
+++ b/audio/soundtrigger/sound_trigger_hw.c
@@ -228,6 +228,7 @@
 
     stdev_dsp_set_power(stdev, 1);
 
+    memset(&config, 0, sizeof(config));
     config.channels = 1;
     config.rate = 16000;
     config.period_size = 240;