wchar: fix inverted parameters in error message
The error message should output "fromcode -> tocode" rather than
"tocode -> fromcode". Seems to be a typo due to the order of the func
called:
iconv_t iconv_open(const char *tocode, const char *fromcode);
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>