One filter test (formatfiltertest07) fails on i586

[lbeltrame]

As the subject says, formatfiltertest07 fails for some reason on i586:

[  131s] QWARN  : TestFilters::testStringFilters(filter-filesizeformat07) Failed to convert input file size into floating point value.
[  131s] FAIL!  : TestFilters::testStringFilters(filter-filesizeformat07) Compared values are not the same
[  131s]    Actual   (result): "999 bytes 1.00 KB 10.00 KB 1000.00 KB 1.00 MB 50.00 MB 1000.00 MB 1.00 GB 1.00 TB 1.00 PB 2.00 EB 1.00 ZB 1000.00 ZB 2000.00 YB 0 bytes 0 bytes -100 bytes -50.00 MB"
[  131s]    Expected (output): "999 bytes 1.00 KB 10.00 KB 1000.00 KB 1.00 MB 50.00 MB 1000.00 MB 1.00 GB 1.00 TB 1.00 PB 2.00 EB 1.00 ZB 1.00 YB 2000.00 YB 0 bytes 0 bytes -100 bytes -50.00 MB"