Fix exception when uploading 0-byte filev2.0.2working

This could be triggered by an empty file (really empty).

The assert is supposed to catch progress calls without a proper upload
total being set. We can easily use -1 rather than 0 for that.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

0 files changed, 0 insertions, 0 deletions