NetworkPkg/HttpBootDxe: Accumulate PartialTransferredSize across retries

When an HTTP download fails with EFI_TIMEOUT or EFI_DEVICE_ERROR and
is retried, PartialTransferredSize was overwritten with only the bytes
received during that attempt instead of accumulating the running total.

This caused the progress percentage to exceed 100%: on each retry the
already-transferred bytes were ignored, so the buffer offset calculation
started from an incorrect position and data was re-downloaded from an
earlier offset.  The cumulative ReceivedSize that feeds the percentage
display therefore grew beyond FileSize.

Fix by using += instead of = when updating PartialTransferredSize on
a failed transfer so that cumulative progress is maintained across all
retry attempts.

Cc: Saloni Kasbekar <saloni.kasbekar@intel.com>
Cc: Zachary Clark-williams <zachary.clark-williams@intel.com>
Cc: Mike Beaton <mjsbeaton@gmail.com>
Signed-off-by: abuthahirm <abuthahirm@ami.com>

0 files changed, 0 insertions, 0 deletions