tweak some regexp params to avoid warnings

Message-ID: <9b18b3110705011446h2113221cndf70af928d72505@mail.gmail.com>

p4raw-id: //depot/perl@31118

1 files changed, 1 insertions, 1 deletions

diff --git a/regexec.c b/regexec.c
index 0b0cc6cb5f..ba0f2b7562 100644
--- a/regexec.c
+++ b/regexec.c
@@ -373,7 +373,7 @@ Perl_pregexec(pTHX_ REGEXP * const prog, char* stringarg, register char *strend,
 
 char *
 Perl_re_intuit_start(pTHX_ REGEXP * const prog, SV *sv, char *strpos,
-		     char *strend, U32 flags, re_scream_pos_data *data)
+		     char *strend, const U32 flags, re_scream_pos_data *data)
 {
     dVAR;
     register I32 start_shift = 0;