Fix long double and double confusion in guesses structure
Fix long double and double confusion in guesses structure

dcprojects/CoolProp,JonWel/CoolProp,dcprojects/CoolProp,dcprojects/CoolProp,JonWel/CoolProp,henningjp/CoolProp,DANA-Laboratory/CoolProp,JonWel/CoolProp,dcprojects/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,dcprojects/CoolProp,dcprojects/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,dcprojects/CoolProp,DANA-Laboratory/CoolProp,JonWel/CoolProp,JonWel/CoolProp,CoolProp/CoolProp,DANA-Laboratory/CoolProp,henningjp/CoolProp,henningjp/CoolProp,DANA-Laboratory/CoolProp,DANA-Laboratory/CoolProp,henningjp/CoolProp,DANA-Laboratory/CoolProp,DANA-Laboratory/CoolProp,JonWel/CoolProp,JonWel/CoolProp,CoolProp/CoolProp