[ojAlgo-user] Bugfix for QP without equality constraint

[Stefan R. <Ste...@gm...>]

Hello everybody,
I just tested ojalgo v.26 and experienced nullpointer-exceptions when I tried to optimize any QP without equality-constraints.

I think, I fixed the problem and want to bring the bugfix back to you with this email. It was no big deal, since I only added null-testing lines for the AE-matrix in org.ojalgo.optimisation.quadratic.ActiveSetSolver and org.ojalgo.optimisation.quadratic.LagrangeSolver
and added some lines for doing the job without the AE-matrix and the BE-vector.
I hope, my solution is correct, since I'm not really familiar with the subject of quadratic optimisation. The few simple problems, I tested  seem to be optimized well, also without equality constraints now.

I marked the code changes with
//change by swr:



greetings

Stefan
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