transport: remove defer in http2Client.getStream (#2980)
transport: remove defer in http2Client.getStream (#2980)


grpc/grpc-go,dfawley/grpc-go,grpc/grpc-go,menghanl/grpc-go,stanley-cheung/grpc-go,menghanl/grpc-go,dfawley/grpc-go,stanley-cheung/grpc-go