Make some casts explicit to keep VC++ 7 happy

Specifically, this silences the warnings from the following smoke:
http://www.nntp.perl.org/group/perl.daily-build.reports/32258
(Hmm. Looks like you need to decode the base64 yourself before you
can read that.)

p4raw-id: //depot/perl@25779

1 files changed, 1 insertions, 1 deletions

diff --git a/toke.c b/toke.c
index 890e6815e9..ba3fbb1a1a 100644
--- a/toke.c
+++ b/toke.c
@@ -446,7 +446,7 @@ S_missingterm(pTHX_ char *s)
 #endif
 	) {
 	*tmpbuf = '^';
-	tmpbuf[1] = toCTRL(PL_multi_close);
+	tmpbuf[1] = (char)toCTRL(PL_multi_close);
 	tmpbuf[2] = '\0';
 	s = tmpbuf;
     }