[automerger skipped] add null check when accessing target component from iteminfo
am: d88f63bbed -s ours
am skip reason: change_id I25d0100077de67b085c27b5ef91e22c6ac1ad959 with SHA1 2f9019e56c is in history

Change-Id: I9db3c71c11571962dcb18afec7ce31397d58c8e5