The attached patch fixes two problems:

1) Error codes were not properly returned to the main curl code (and on to apps using libcurl).

2) tftp was crapping out when tsize == 0 on upload..but I see no reason to fail to upload
   just because the remote file is zero-length. Ignore tsize option on upload.

This applies on top of my previous patch to fix tftp rate limiting.

Thanks,
Ben

-- 
Ben Greear <greearb_at_candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

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