json.Number issue

[grv99]

The strings obfuscator currently breaks for json.Number symbols.

Ex. https://github.com/auto-program/vendor/blob/9351d5081b8149a1d03a783dae10cf054146ed16/github.com/gocraft/dbr/types.go#L106

// UnmarshalJSON correctly deserializes a NullInt64 from JSON
func (n *NullInt64) UnmarshalJSON(b []byte) error {
	var s json.Number
	if err := json.Unmarshal(b, &s); err != nil {
		return err
	}
	if s == "" {
		return n.Scan(nil)
	}
	return n.Scan(s)
}

func (n *NullInt64) UnmarshalJSON(b []byte) error {
	var s json.Number
	if err := json.Unmarshal(b, &s); err != nil {
		return err
	}
	if s == (func() string {
mask := []byte("")
maskedStr := []byte("")
res := make([]byte, 0)
        for i, m := range mask {
            res[i] = m ^ maskedStr[i]
        }
        return string(res)
        }()) {
		return n.Scan(nil)
	}
	return n.Scan(s)
}

cannot compare s == ((func() string literal)()) (mismatched types json.Number and string)