Make error reporting in socket test programs consistent with other usages by
removing redundant newline, using strerror() and reporting error in
parentheses.
Similar to f6e0d19cc0 but
fixed in the header by making it a proper static inline
function (as some callers treats it as one, so do it
for all now for consistency).
Seen on Ubuntu 18.04 with
giving:
In file included from getaddrinfo-test.c:36:0:
getaddrinfo-test.c: In function ‘main’:
roken.h:110:24: error: statement with no effect [-Werror=unused-value]
#define rk_SOCK_INIT() 0
^
getaddrinfo-test.c:132:5: note: in expansion of macro ‘rk_SOCK_INIT’
rk_SOCK_INIT();
^~~~~~~~~~~~
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
