audi policy manager: fix use after free in initialize()

Fix regression introduced by commit 11d30104 in cleanup loop in
AudioPolicyManager::initialize().

Bug: 123080575
Test: make
Change-Id: I048eeb5f5c6e6bc83dd2b31af4dd600bc07ab1a2
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 30b438d..5c8a799 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -4070,7 +4070,8 @@
     }
     // make sure all attached devices have been allocated a unique ID
     auto checkAndSetAvailable = [this](auto& devices) {
-        for (const auto &device : devices) {
+        for (size_t i = 0; i < devices.size();) {
+            const auto &device = devices[i];
             if (!device->isAttached()) {
                 ALOGW("device %s is unreachable", device->toString().c_str());
                 devices.remove(device);
@@ -4078,6 +4079,7 @@
             }
             // Device is now validated and can be appended to the available devices of the engine
             mEngine->setDeviceConnectionState(device, AUDIO_POLICY_DEVICE_STATE_AVAILABLE);
+            i++;
         }
     };
     checkAndSetAvailable(mAvailableOutputDevices);