Non-positive Nanjing lambda

[ilyamandel]

Nanjing lambda can be non-positive in version 03.18.02, which should not happen

To reproduce, run

./COMPAS -n 1 --metallicity-distribution LOGUNIFORM --random-seed 46

The output is

ERROR: in Core_Helium_Burning::double BaseStar::CalculateBindingEnergy(double, double, double, double) const: Lambda <= 0.0; Binding energy = 0.0, (ObjectId = 6)
0: Evolution stopped because an error occurred: (Main_Sequence_>0.7 -> Core_Helium_Burning) + (Main_Sequence<=0.7 -> Main_Sequence<=_0.7)

[ilyamandel]

The issue was with the Loveridge lambda, not the Nanjing lambda. Fixed in #1381, closing.