misc: small fix or general refactoring i did not bother commenting

modules/zerogod/zerogod_ipp_unhandled.go

@@ -0,0 +1,11 @@
+package zerogod
+
+import "github.com/phin1x/go-ipp"
+
+func ippOnUnhandledRequest(ctx *HandlerContext, ipp_req *ipp.Request, ipp_op_name string) {
+	ctx.mod.Warning("unhandled request from %v: operation=%s - %++v", ctx.client.RemoteAddr(), ipp_op_name, *ipp_req)
+
+	ippSendResponse(ctx, ipp.NewResponse(
+		ipp.StatusErrorOperationNotSupported,
+		ipp_req.RequestId))
+}