The short answer is no. Dry firing a Glock does not hurt the firing pin or any other part of the gun. Over time, the trigger spring and recoil spring may wear, but much slower than it would from live fire.

Dry firing a center fire pistol or rifle will not hurt the gun. The only exception is a rimfire gun as the firing pin will strike the side of the chamber when no round is present. This will eventually dull the firing pin or damage the chamber wall. Although, some guns like the Ruger 22/45 can be safely dry fired due to careful design improvements.