custom tags are not generated for oneof filed

[krhubert]

Hi,

following message:

syntax = "proto3";
  
import "gogo/protobuf/gogoproto/gogo.proto";

message T {
  oneof v {
    string s = 1 [
      (gogoproto.moretags) = 'customtag:"s"'
    ];
  }
}

will generate

$ protoc --gogofaster_out=. t.proto

go struct

type T_S struct {
  S string `protobuf:"bytes,1,opt,name=s,proto3,oneof"`
}

So the tags are not injected into oneof fields.

[jmarais]

Thanks for logging the bug. Please see the pull request comments.