No Barmaster, and no Person acting at the Request and in aid of any Barmaster, shall be liable to any Action for anything done or authorized by such Barmaster, in obedience or necessary for Obedience to any Writ, Precept, Warrant, or Process signed by the Steward, and sealed with the said Seal, although the same be void or irregular, or an Excess of Jurisdiction; nor shall any Act done by any such Barmaster or other Person, while acting under any such Writ, Precept, Warrant, or Process, make him a Trespasserab initio,though it be not in obedience or not necessary for Obedience to such Writ, Precept, Warrant, or Process; but the Party committing such last-mentioned Act shall be liable to an Action for the same if it be illegal.