In case the county shall discontinue any proceedings taken providing for the appropriation, injury or destruction of any land, property or materials prior to the entry upon, taking or appropriation thereof and before judgment therein, the said county shall not thereafter be liable to pay any damages which have been or might have been allowed, but all costs upon any such proceedings had thereon shall be paid by the county, together with any actual damages, loss or injury sustained by reason of such proceeding, and the amount of the same may be determined and fixed by the court in which such proceeding was pending.