IRGen: Fix emitIsUniqueCall on Objective-C values
IRGen: Fix emitIsUniqueCall on Objective-C values

roambotics/swift,apple/swift,roambotics/swift,apple/swift,roambotics/swift,roambotics/swift,apple/swift,apple/swift,roambotics/swift,apple/swift,roambotics/swift,apple/swift