Fix wretest locale check.

While here, remove the comment about FreeBSD, since it is not alone in
omitting the first hyphen, and most Linux distributions will happily
accept both spellings.

tests/retest.c

@@ -607,7 +607,8 @@ main(int argc, char **argv)
 #ifdef WRETEST
   /* Need an 8-bit locale.  Or move the two tests with non-ascii
      characters to the localized internationalization tests.  */
-  if (setlocale(LC_CTYPE, "en_US.ISO-8859-1") == NULL)
+  if (setlocale(LC_CTYPE, "en_US.ISO-8859-1") == NULL &&
+      setlocale(LC_CTYPE, "en_US.ISO8859-1") == NULL)
     fprintf(stderr, "Could not set locale en_US.ISO-8859-1.  Expect some\n"
 		    "`Invalid or incomplete multi-byte sequence' errors.\n");
 #endif /* WRETEST */
@@ -1724,7 +1725,7 @@ main(int argc, char **argv)
 
 #if !defined(WIN32) && !defined(__OpenBSD__)
   if (setlocale(LC_CTYPE, "en_US.ISO-8859-1") != NULL ||
-      setlocale(LC_CTYPE, "en_US.ISO8859-1" /* FreeBSD seems to spell it differently */) != NULL)
+      setlocale(LC_CTYPE, "en_US.ISO8859-1") != NULL)
     {
       fprintf(output_fd,"\nTesting LC_CTYPE en_US.ISO-8859-1\n");
 #ifdef SRC_IN_ISO_8859_1