tests: avoid some compiler warnings Mostly Simon's modules; warnings reported by gcc 4.3.4 on coreutils. * tests/test-getaddrinfo.c (simple): Mark static, and allow string literals. * tests/test-memchr.c (main): Avoid type mismatch. * tests/test-arpa_inet.c (main): Avoid unused parameters. * tests/test-base64.c (main): Likewise. * tests/test-getdelim.c (main): Likewise. * tests/test-gethostname.c (main): Likewise. * tests/test-getline.c (main): Likewise. * tests/test-netinet_in.c (main): Likewise. * tests/test-select.c (open_server_socket, main): Likewise. * tests/test-select-stdin.c (main): Likewise. * tests/test-sockets.c (main): Likewise. * tests/test-strsignal.c (main): Likewise. * tests/test-sys_select.c (main): Likewise. * tests/test-sys_socket.c (main): Likewise. * tests/test-u64.c (main): Likewise. * tests/test-xfprintf-posix.c (main): Likewise. * tests/test-xvasprintf.c (test_xvasprintf, main): Likewise. Signed-off-by: Eric Blake <ebb9@byu.net>

--- a/tests/test-netinet_in.c
+++ b/tests/test-netinet_in.c
@@ -1,5 +1,5 @@
 /* Test of <netinet/in.h> substitute.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2009 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -21,7 +21,7 @@
 #include <netinet/in.h>
 
 int
-main ()
+main (void)
 {
   return 0;
 }