Rename the XML encoded http.ErrorResponse

[tchssk]

Related to goadesign/clue#284

The XML encoded http.ErrorResponse is formed as follows:

<ErrorResponse>
        <name>name</name>
        <id>id</id>
        <message>message</message>
        <temporary>false</temporary>
        <timeout>false</timeout>
        <fault>false</fault>
</ErrorResponse>

But I think the top level element should be like this:

<error>
        <name>name</name>
        <id>id</id>
        <message>message</message>
        <temporary>false</temporary>
        <timeout>false</timeout>
        <fault>false</fault>
</error>

It can be restored the previous form:

goahttp.ErrorResponseXMLName = xml.Name{Local: "ErrorResponse"}

[tchssk]

DeepSource again...

[raphael]

Thank you, looks good. Looks like one of the issues reported by DeepSource could be addressed (https://app.deepsource.com/gh/goadesign/goa/run/68b2c44c-c727-40d1-8edf-63efacc2a6c9/go/RVV-B0012?listindex=1). The other issue was already there but maybe we can take this opportunity to fix it too (i.e. change the receivers for the Marshal methods to be pointers).