AudioDeviceBroker: Add missing break

Fix a regression after: 3fe5af48901 A2DP switch device refactor

Test: Manual
Change-Id: Id00aa3ebeb790d66f97218c9e3b1fae99f5ef6b8
diff --git a/services/core/java/com/android/server/audio/AudioDeviceBroker.java b/services/core/java/com/android/server/audio/AudioDeviceBroker.java
index 4fc6614..2eb59b2 100644
--- a/services/core/java/com/android/server/audio/AudioDeviceBroker.java
+++ b/services/core/java/com/android/server/audio/AudioDeviceBroker.java
@@ -1205,6 +1205,7 @@
                         mDeviceInventory.onSetBtActiveDevice((BtDeviceInfo) msg.obj,
                                 mAudioService.getBluetoothContextualVolumeStream());
                     }
+                    break;
                 case MSG_BT_HEADSET_CNCT_FAILED:
                     synchronized (mSetModeLock) {
                         synchronized (mDeviceStateLock) {