healthd: Turn on -Werror

Change-Id: I72caf38008ee7d842dfacd3f58add9bc8e4787e8
diff --git a/healthd/healthd_mode_android.cpp b/healthd/healthd_mode_android.cpp
index 4887c8c..fd153a2 100644
--- a/healthd/healthd_mode_android.cpp
+++ b/healthd/healthd_mode_android.cpp
@@ -42,11 +42,11 @@
     return -1;
 }
 
-static void binder_event(uint32_t epevents) {
+static void binder_event(uint32_t /*epevents*/) {
     IPCThreadState::self()->handlePolledCommands();
 }
 
-void healthd_mode_android_init(struct healthd_config *config) {
+void healthd_mode_android_init(struct healthd_config* /*config*/) {
     ProcessState::self()->setThreadPoolMaxThreadCount(0);
     IPCThreadState::self()->disableBackgroundScheduling(true);
     IPCThreadState::self()->setupPolling(&gBinderFd);