utf8.c: Change UTF8 to UVCHR

There is no practical difference between UTF8_IS_INVARIANT and
UVCHR_IS_INVARIANT, except that the latter is supposed to be used on
characters.  Fix to conform.

diff --git a/utf8.c b/utf8.c
index 6c73921..e13d5e9 100644 (file)
--- a/utf8.c
+++ b/utf8.c
@@ -1942,7 +1942,7 @@ Perl_utf8_to_bytes(pTHX_ U8 *s, STRLEN *len)
     d = s = save;
     while (s < send) {
        U8 c = *s++;
-       if (! UTF8_IS_INVARIANT(c)) {
+       if (! UVCHR_IS_INVARIANT(c)) {
            /* Then it is two-byte encoded */
            c = EIGHT_BIT_UTF8_TO_NATIVE(c, *s);
             s++;