mgmt: hawkbit: Fix case where body_data not set correctly

When downloading large files from the hawkbit server
 the only time rsp->body_start is checked is on the
first call. After this it is never checked again.

This caused the wrong data to be written to flash
and a failed update.

Signed-off-by: Joep Buruma <burumaj50@gmail.com>
1 file changed