Nylon string guitar bridges aren't compensated. The strings are so much softer than steel ones that the dead length at each end is very small and doesn't vary hugely with string thickness (and classical guitar string sets have less variation in string size than steel strings). Likewise the silk (or whatever's been used) cores of the wound strings are soft and also have a very small dead length at each end of a size comparable to the nylon strings.
With a couple of clamps to hold it in position, you could have done an empirical test for bridge placement to check how much extra length over nominal scale length you needed (if any).
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