[SwiftSyntax] Decode error message in incr_transefer_round_trip.py
[SwiftSyntax] Decode error message in incr_transefer_round_trip.py

Otherwise, we output the error as a binary string. I think this started happening with the switch to Python 3.

JGiola/swift,roambotics/swift,roambotics/swift,roambotics/swift,benlangmuir/swift,roambotics/swift,glessard/swift,apple/swift,benlangmuir/swift,ahoppen/swift,atrick/swift,JGiola/swift,atrick/swift,JGiola/swift,apple/swift,roambotics/swift,JGiola/swift,benlangmuir/swift,glessard/swift,atrick/swift,benlangmuir/swift,glessard/swift,ahoppen/swift,apple/swift,glessard/swift,atrick/swift,JGiola/swift,ahoppen/swift,apple/swift,ahoppen/swift,atrick/swift,JGiola/swift,atrick/swift,ahoppen/swift,ahoppen/swift,glessard/swift,glessard/swift,apple/swift,roambotics/swift,benlangmuir/swift,benlangmuir/swift,apple/swift