Would you like to [add more error handling](https://github.com/blechschmidt/massdns/blob/8df0535154d67f21626c039f7e43666965aef758/main.c#L178) for [return values from functions like "fprintf"](http://pubs.opengroup.org/onlinepubs/9699919799/functions/fprintf.html)?
Would you like to add more error handling for return values from functions like "fprintf"?