tree 321611b4121e021ecd64dbf172dab1f9e32f6a82
parent 140d378f4f68a0bd045bd254fc89019dc22fd40f
author Gabriele M <moto.falcon.git@gmail.com> 1496506119 +0200
committer Arne Coucheron <arco68@gmail.com> 1496605573 +0000

fix check_blacklist function to work on wiped /system partition

If /system is empty, /tmp/addon.d/ will not exist, "*sh" won't be
expanded, md5sum will not generate any output and the variable $s
will be empty. Therefore grep, which will receive only one arg, will
start to read the standard input and never exit, causing the
installation to never end. Fix this checking whether we have files
to read or not.

Change-Id: I656eab42e54b3f81da8c5ac81374b9deddcf8484