Use audio_module_handle_t and audio_patch_handle_t consistently

Bug: 27814144
Change-Id: I54b7a73ec318779fd3addb060998f4d94141152d
diff --git a/media/libmedia/IAudioPolicyService.cpp b/media/libmedia/IAudioPolicyService.cpp
index 16e8f11..4ea67da 100644
--- a/media/libmedia/IAudioPolicyService.cpp
+++ b/media/libmedia/IAudioPolicyService.cpp
@@ -965,7 +965,7 @@
             audio_channel_mask_t channelMask = data.readInt32();
             audio_input_flags_t flags = (audio_input_flags_t) data.readInt32();
             audio_port_handle_t selectedDeviceId = (audio_port_handle_t) data.readInt32();
-            audio_io_handle_t input = {};
+            audio_io_handle_t input = AUDIO_IO_HANDLE_NONE;
             status_t status = getInputForAttr(&attr, &input, session, uid,
                                               samplingRate, format, channelMask,
                                               flags, selectedDeviceId);
@@ -1197,7 +1197,7 @@
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
             struct audio_patch patch;
             data.read(&patch, sizeof(struct audio_patch));
-            audio_patch_handle_t handle = {};
+            audio_patch_handle_t handle = AUDIO_PATCH_HANDLE_NONE;
             if (data.read(&handle, sizeof(audio_patch_handle_t)) != NO_ERROR) {
                 ALOGE("b/23912202");
             }
@@ -1275,9 +1275,9 @@
             CHECK_INTERFACE(IAudioPolicyService, data, reply);
             sp<IAudioPolicyServiceClient> client = interface_cast<IAudioPolicyServiceClient>(
                     data.readStrongBinder());
-            audio_session_t session = {};
-            audio_io_handle_t ioHandle = {};
-            audio_devices_t device = {};
+            audio_session_t session = AUDIO_SESSION_NONE;
+            audio_io_handle_t ioHandle = AUDIO_IO_HANDLE_NONE;
+            audio_devices_t device = AUDIO_DEVICE_NONE;
             status_t status = acquireSoundTriggerSession(&session, &ioHandle, &device);
             reply->writeInt32(status);
             if (status == NO_ERROR) {