intrpvar.h: Use #define instead of hard-coded number

The number 12 is mysterious as to why we are using it otherwise.

diff --git a/intrpvar.h b/intrpvar.h
index 52b45ba..96d9e5a 100644 (file)
--- a/intrpvar.h
+++ b/intrpvar.h
@@ -634,7 +634,7 @@ PERLVAR(I, utf8_charname_continue, SV *)
 PERLVAR(I, last_swash_hv, HV *)
 PERLVAR(I, last_swash_tmps, U8 *)
 PERLVAR(I, last_swash_slen, STRLEN)
-PERLVARA(I, last_swash_key,12, U8)
+PERLVARA(I, last_swash_key,UTF8_MAXBYTES-1, U8)
 PERLVAR(I, last_swash_klen, U8)                /* Only needs to store 0-12  */
 
 #ifdef FCRYPT