Fix InsertDexFileInToClassLoader to handle null class loaders am: f2bf9d6
am: a5543be

* commit 'a5543bec09498e9c3b1c5293a20d6b0f087e2956':
  Fix InsertDexFileInToClassLoader to handle null class loaders

Change-Id: I75a340a73ebe674fe4e346dee9e7eda5865a53c8