[Bug middle-end/47406] gcc.dg/torture/builtin-modf-1.c FAILs on IRIX 6.5

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47406
Bug 47406 depends on bug 48341, which changed state.

Bug 48341 Summary: LDBL_EPSILON is wrong on IRIX 6.5
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48341

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |WONTFIX