Fixed uncompressing files with wrong uncompressed size set.

A zip file carries some metadata for each archived file, including the total
uncompressed size. If that size was incorrect, therefore the compressed file
being different in size when unpacking, the minizip code would fail with a
CRC error. Every other zip utility handles these files, so should the minizip
code for safety sake.

BUG=359516

Review URL: https://codereview.chromium.org/222243003

Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 764f0715d75c8d49339aa73d0ee2feb75d63473f