audio policy: fix very verbose log build.

Change-Id: I94a69207059d8010ded14bce5d6e39c3f3074649
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 82c9e55..0adaac9 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -4585,7 +4585,8 @@
                                              int delayMs,
                                              audio_devices_t device)
 {
-    ALOGVV("setStrategyMute() strategy %d, mute %d, output %d", strategy, on, output);
+    ALOGVV("setStrategyMute() strategy %d, mute %d, output ID %d",
+           strategy, on, outputDesc->getId());
     for (int stream = 0; stream < AUDIO_STREAM_CNT; stream++) {
         if (stream == AUDIO_STREAM_PATCH) {
             continue;