Fix dex file verification check for dexlayout output file.

For debug builds, we want to run the output dex file through the dex
file verifier as a sanity check. The initial check was actually checking
the input dex file again...

Bug: 36107940
Test: mm test-art-host
Change-Id: Ibd434d67f661c325a443d4ca9cced481e7a9b02c