computeLinkBudget should return a scalar

[Matteo Artuso]

The bug happens when setting 1 eNodeB per type and setting the MacroEnb.radius to 500

[Jakob Thrane]

computeLinkBudget complains, but in reality this is loss3gpp38901 that returns a vector. It should return a scalar.

[MonsterMarkus]

I am unable to reproduce the error. I have set 1 of each eNodeB type and the radius to 500, but the error does not appear.

[Jakob Thrane]

Fixed in pull request #88