roots hangs with double roots

[dpsanders]

 rts = roots(x->exp(x^2) - cos(x), -10..10)

seems to hang

[dpsanders]

This now works:

julia> rts = roots(x->exp(x^2) - cos(x), -10..10)
2-element Array{Root{Interval{Float64}},1}:
 Root([1.01295e-08, 3.30576e-08], :unknown)
 Root([-5.98024e-08, 1.01296e-08], :unknown)