e1b0b7 Use map() to fix displaying the error message

Authored and Committed by Christian Boltz 3 years ago
    Use map() to fix displaying the error message
    
    This is needed for grains with allowed values that map to boolean
    True/False (like "yes" and "no", and of course also "True" and "False").
    
    join() expects that its parameters are strings and errors out on
    booleans.
    
        
file modified
+1 -1