crypt32: Constify some variables (3 of 5)

[Andrew Talbot]

Changelog:
    crypt32: Constify some variables.

diff -urN a/dlls/crypt32/crl.c b/dlls/crypt32/crl.c
--- a/dlls/crypt32/crl.c	2006-10-25 19:30:56.000000000 +0100
+++ b/dlls/crypt32/crl.c	2007-04-09 12:04:34.000000000 +0100
@@ -473,7 +473,7 @@
     return TRUE;
 }
 
-static PCRL_ENTRY CRYPT_FindCertificateInCRL(PCERT_INFO cert, PCRL_INFO crl)
+static PCRL_ENTRY CRYPT_FindCertificateInCRL(PCERT_INFO cert, const CRL_INFO *crl)
 {
     DWORD i;
     PCRL_ENTRY entry = NULL;