private/protocol/json/jsonutil: avoid unnecessary allocation in unmarshalScalar (#2044)
private/protocol/json/jsonutil: avoid unnecessary allocation in unmarshalScalar (#2044)


yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,jasdel/aws-sdk-go,aws/aws-sdk-go