Themes: Fix -110 install error [1/2]

aapt was being called from PM with a ' ' at the end of the cmd. This would
cause installd to read unexpected parts of memory which sometimes
causes it to parse the command incorrectly.

Change-Id: Id9f1170db05b40f030d6ea5009bed38bc9fc3b5f
(cherry picked from commit ba5f5a019da91615701fa59791502541c7df9d4a)