Memory leak in IInputMethodSessionWrapper executeMessage

In some cases the executeMessage is called with
mInputMethodSession == null. For the messages

DO_UPDATE_SELECTION, DO_APP_PRIVATE_COMMAND

memory is leaked. This commit recycles the args freeing
the allocated memory.
Fix DataInputStream leaks

Fix fixes
-In viewstateserializer, try to close before throwing or returning, and throw early if inputstream is null
-other stuff

Change-Id: I7f3b16057582566b82a85841829ff6ed11cd570e