23: Fix panix on input `12` for solution for Rust track exercise "Nth Prime".

Created by  Aaw9nJhsNmfzFih9mKyNw9mV8CgERXJkRa1kK1Kx3LQH  on August 27, 2021
KWE5K6XLZULD6MDDVM7X2YFMYMKL76L4MHRAUXZ6EWL5YAJVBKUQC
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