Fix bots by adding optimized_stdlib flag to a test.
Fix bots by adding optimized_stdlib flag to a test.

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