[PATCH] Test getaddrinfo return value

[Roland McGrath]

Is this testing for regression of a bug that's in bugzilla?

> +++ b/posix/tst-getaddrinfo4.c
> @@ -0,0 +1,66 @@
> +/* Copyright (C) 2013 Free Software Foundation, Inc.

Top line of each new file is a descriptive comment.

> +  memset(&hints, 0, sizeof hints);

Space before paren.

> +  err |= try(NULL, 0, 0);

Space before paren.