fix progress for redirected HTTP Downloads
fix progress for redirected HTTP Downloads

 - do not emit the progress in the redirect case for the redirect data

Task-number: QTIFW-267

Change-Id: Id32018a92df3098e45c963b4dcf7924bebdd1354
Reviewed-by: Karsten Heimrich <81d67632fe4bf9afb88a400b41aa25e19a1d2a12@digia.com>
Reviewed-by: Niels Weber <df24410c43e1f71d7f720aa26e4fcb77ce70f242@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw