Unable to unmarshal int with spaces

gistfile1.go

package main

import (
        "encoding/xml"
        "fmt"
)

type MyType struct {
        XMLName xml.Name `bson:"-" xml:"response"`
        Result  int      `bson:"result" xml:"result"`
}

func main() {
        var payload string
        payload = ` 
                 <response>
                        <result>1</result>
                 </response>
         `

        var mt MyType
        xml.Unmarshal([]byte(payload), &mt)

        // This prints: {XMLName:{Space: Local:response} Result:1}
        fmt.Printf("mt was %+v\n", mt) 

        // NOTE: result has spaces
        payload = ` 
                 <response>
                        <result> 1 </result>  
                 </response>
         `

        var newmt MyType
        xml.Unmarshal([]byte(payload), &newmt)

        // This prints: {XMLName:{Space: Local:response} Result:0}
        fmt.Printf("newmt was %+v\n", newmt)
}