utf8.c: Fix EBCDIC detection of above-31 bit code points

This was failing on EBCDIC machines, and I couldn't figure out why.  I
didn't see any flaws in the logic.  It required special debugging code
to answer.  It turns out it was a bad declaration, and not logic at all.

The declaration should have been

    const U8 prefix[] = ...

instead it was

    const U8 * const prefix = ...

sizeof() the latter is 4, as it is looking at pointer size.  What was
intended was the size of the array this was initialized to, which was
longer.  What this led to was later in the routine, a comparison was
stopping too early.

1 files changed, 2 insertions, 2 deletions

diff --git a/utf8.c b/utf8.c
index da575a9e4d..074f738806 100644
--- a/utf8.c
+++ b/utf8.c
@@ -383,8 +383,8 @@ S_is_utf8_cp_above_31_bits(const U8 * const s, const U8 * const e)
 
 #ifdef EBCDIC
 
-        /* [0] is start byte           [1] [2] [3] [4] [5] [6] [7] */
-    const U8 * const prefix = (U8 *) "\x41\x41\x41\x41\x41\x41\x42";
+    /* [0] is start byte  [1] [2] [3] [4] [5] [6] [7] */
+    const U8 prefix[] = "\x41\x41\x41\x41\x41\x41\x42";
     const STRLEN prefix_len = sizeof(prefix) - 1;
     const STRLEN len = e - s;
     const STRLEN cmp_len = MIN(prefix_len, len - 1);