Silence some VC6 compiler warnings in the regex code

p4raw-id: //depot/perl@31131

1 files changed, 1 insertions, 1 deletions

diff --git a/regcomp.c b/regcomp.c
index 5750a0285c..baa5d99285 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -8953,7 +8953,7 @@ Perl_reg_temp_copy (pTHX_ struct regexp *r) {
  */
  
 void
-Perl_regfree_internal(pTHX_ struct regexp *r)
+Perl_regfree_internal(pTHX_ REGEXP * const r)
 {
     dVAR;
     RXi_GET_DECL(r,ri);