commit 5c7d8fafa8d77cb29306791499e699a74740a2fc
author Philip P. Moltmann <moltmann@google.com> Wed Feb 14 13:55:57 2018 -0800
committer Philip P. Moltmann <moltmann@google.com> Wed Feb 14 13:55:57 2018 -0800
tree 09d76a6262e4113adcbb95211ae2285d48597267
parent e047522ecec94e7253761cf45b94b5a9b9e6c691

Do not transform again on crash

Before:

onServiceConnected
   AsyncTask 1: doInBackground
                doTransform
                   PdfEditor service crashes

system restarts PdfEditor service -> onServiceConnected
   AsyncTask 2: doInBackground
                doTransform
		onPostExecute
		   Unbind from service

   AsyncTask 1: onPostExecute
                   Unbind from service again -> crash

Hence we have to only ever create a single async task even if we get
another onServiceConnected.

Test: atest CtsPrintTestCases
Change-Id: Ia18e82fe6258bac9395557b2056645e87a752889
Fixes: 73127227