Don't fail when trying to load the resource again while the download is still in progress (happens eg. in Kontact's summary view).
Don't fail when trying to load the resource again while the download is
still in progress (happens eg. in Kontact's summary view).

svn path=/branches/KDE/3.5/kdepim/; revision=500125

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi