One Softsusy bug fix and one compiler warning fix

Dear Ben,

I noticed a segmentation fault if `softpoint.x` is called with `--lambda` or `--kappa` but insufficiently many indices:

  `./softpoint.x sugra --tanBeta=10 --lambda 1`

The second commit below fixes this issue.

The other commit fixes a compiler warning which comes from a forward declaration of `sBrevity` with the wrong type (`class` instead of `struct`).

Please feel free to merge these fixes into your master branch.

Best,
Alex