utf8.c: Fix comment

diff --git a/utf8.c b/utf8.c
index 571c451..d75e481 100644 (file)
--- a/utf8.c
+++ b/utf8.c
@@ -714,7 +714,8 @@ Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags)
                sv = sv_2mortal(Perl_newSVpvf(aTHX_ "Code point 0x%04"UVXf" is not Unicode, may not be portable", uv));
                pack_warn = packWARN(WARN_NON_UNICODE);
            }
-#ifndef EBCDIC /* EBCDIC always allows FE, FF */
+#ifndef EBCDIC /* Can never have the equivalent of FE nor FF on EBCDIC, since
+                   not representable in UTF-EBCDIC */
 
             /* The first byte being 0xFE or 0xFF is a subset of the SUPER code
              * points.  We test for these after the regular SUPER ones, and