Keep dex files live for duration of oatdump

Not keeping the dex file live caused a dex cache with a pointer to a
stale dex file resulting in oatdump failing. This is required to
remove the dex file location test that causes the class loader 068
test to fail.

Change-Id: I5d532862ab998482c0d16d7a63c6bdc3752f031a
2 files changed