Univariate optimization does not stop when callback returns true

[fredcallaway]

Minimal example:

julia> optimize(x->x^2, -5, 5, callback=_->true)

Results of Optimization Algorithm
 * Algorithm: Brent's Method
 * Search Interval: [-5.000000, 5.000000]
 * Minimizer: 0.000000e+00
 * Minimum: 0.000000e+00
 * Iterations: 5
 * Convergence: max(|x - x_upper|, |x - x_lower|) <= 2*(1.5e-08*|x|+2.2e-16): true
 * Objective Function Calls: 6

It should stop after the first iteration, but it goes for 5

[pkofod]

thanks. I've opened the PR #831

[pkofod]

Sorry, vacation happened :)