small bugfix in white kernel
small bugfix in white kernel

ptonner/GPy,ptonner/GPy,ptonner/GPy,Dapid/GPy,AlexGrig/GPy,Dapid/GPy,PredictiveScienceLab/GPy,SheffieldML/GPy,avehtari/GPy,ptonner/GPy,beckdaniel/GPy,maaskola/GPy,jameshensman/GPy,SheffieldML/GPy,ysekky/GPy,buntyke/GPy,esiivola/GPYgradients,dhhjx880713/GPy,maaskola/GPy,dhhjx880713/GPy,beckdaniel/GPy,PredictiveScienceLab/GPy,befelix/GPy,buntyke/GPy,ysekky/GPy,AlexGrig/GPy,mikecroucher/GPy,avehtari/GPy,ysekky/GPy,befelix/GPy,Dapid/GPy,esiivola/GPYgradients,AlexGrig/GPy,befelix/GPy,buntyke/GPy,avehtari/GPy,dhhjx880713/GPy,SheffieldML/GPy,maaskola/GPy,esiivola/GPYgradients,PredictiveScienceLab/GPy,jameshensman/GPy,mikecroucher/GPy,SheffieldML/GPy,buntyke/GPy,jameshensman/GPy,Dapid/GPy,esiivola/GPYgradients,beckdaniel/GPy,PredictiveScienceLab/GPy,jameshensman/GPy,befelix/GPy,AlexGrig/GPy,avehtari/GPy,maaskola/GPy,mikecroucher/GPy,beckdaniel/GPy,mikecroucher/GPy,ysekky/GPy,dhhjx880713/GPy