regcomp.c: Silence smoke win32 compiler warnig

diff --git a/regcomp.c b/regcomp.c
index 05f10be..560696e 100644 (file)
--- a/regcomp.c
+++ b/regcomp.c
@@ -8849,8 +8849,8 @@ tryagain:
                                *d = '\0';
                                RExC_end = (char *) d;
                            }
-                           else {
-                               tmpbuf[0] = ender;
+                           else {  /* ender above 255 already excluded */
+                               tmpbuf[0] = (U8) ender;
                                tmpbuf[1] = '\0';
                                RExC_end = RExC_parse + 1;
                            }