Initialize mStrategyMutedByDevice

Valgrind found this

Change-Id: I24c640c2b0b6cac129c23bfc18828aff005ec952
diff --git a/audio/AudioPolicyManagerBase.cpp b/audio/AudioPolicyManagerBase.cpp
index 51b1501..99733d3 100644
--- a/audio/AudioPolicyManagerBase.cpp
+++ b/audio/AudioPolicyManagerBase.cpp
@@ -2952,6 +2952,9 @@
         mMuteCount[i] = 0;
         mStopTime[i] = 0;
     }
+    for (int i = 0; i < NUM_STRATEGIES; i++) {
+        mStrategyMutedByDevice[i] = false;
+    }
     if (profile != NULL) {
         mSamplingRate = profile->mSamplingRates[0];
         mFormat = profile->mFormats[0];