Use audio_module_handle_t and audio_patch_handle_t consistently

Bug: 27814144
Change-Id: I54b7a73ec318779fd3addb060998f4d94141152d
diff --git a/media/libmedia/IAudioFlinger.cpp b/media/libmedia/IAudioFlinger.cpp
index 042eac5..7543b60 100644
--- a/media/libmedia/IAudioFlinger.cpp
+++ b/media/libmedia/IAudioFlinger.cpp
@@ -1355,7 +1355,7 @@
             CHECK_INTERFACE(IAudioFlinger, 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/23905951");
             }