Fix resource leaks in drm hal

bug:36408047
test: manual tests to verify leaks are fixed
Change-Id: Idd79e99e211d81f8b3e58cf52c9b01ce9d370dc4
diff --git a/drm/1.0/default/DrmFactory.cpp b/drm/1.0/default/DrmFactory.cpp
index 7e5d998..05951d7 100644
--- a/drm/1.0/default/DrmFactory.cpp
+++ b/drm/1.0/default/DrmFactory.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2016 The Android Open Source Project
-` *
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at