Fix reported dex file size to libunwindstack.

Compact dex file size is non-trivial.

This has not been a major issue so far since the
dex loader in libunwindstack just keeps retrying
with bigger size, but we should fix the error.

Test: test.py -r -b --host -t 137
Change-Id: Ifa06640fce8efe12cf8e82f573a0da41a37a44fa
1 file changed