crypt32: Constify some variables

[Andrew Talbot]

Changelog:
    crypt32: Constify some variables.

diff --git a/dlls/crypt32/context.c b/dlls/crypt32/context.c
index f7ebebb..bb87799 100644
--- a/dlls/crypt32/context.c
+++ b/dlls/crypt32/context.c
@@ -201,7 +201,7 @@ struct ContextList *ContextList_Create(
     return list;
 }
 
-static inline struct list *ContextList_ContextToEntry(struct ContextList *list,
+static inline struct list *ContextList_ContextToEntry(const struct ContextList *list,
  const void *context)
 {
     struct list *ret;
@@ -213,7 +213,7 @@ static inline struct list *ContextList_ContextToEntry(struct ContextList *list,
     return ret;
 }
 
-static inline void *ContextList_EntryToContext(struct ContextList *list,
+static inline void *ContextList_EntryToContext(const struct ContextList *list,
  struct list *entry)
 {
     return (LPBYTE)entry - sizeof(LINK_CONTEXT) - list->contextSize;
diff --git a/dlls/crypt32/crypt32_private.h b/dlls/crypt32/crypt32_private.h
index 46d4797..07c6382 100644
--- a/dlls/crypt32/crypt32_private.h
+++ b/dlls/crypt32/crypt32_private.h
@@ -79,7 +79,7 @@ typedef struct _CRYPT_DIGESTED_DATA
     CRYPT_HASH_BLOB            hash;
 } CRYPT_DIGESTED_DATA;
 
-BOOL CRYPT_AsnEncodePKCSDigestedData(CRYPT_DIGESTED_DATA *digestedData,
+BOOL CRYPT_AsnEncodePKCSDigestedData(const CRYPT_DIGESTED_DATA *digestedData,
  void *pvData, DWORD *pcbData);
 
 typedef struct _CRYPT_SIGNED_INFO
diff --git a/dlls/crypt32/encode.c b/dlls/crypt32/encode.c
index 14d193f..67a0155 100644
--- a/dlls/crypt32/encode.c
+++ b/dlls/crypt32/encode.c
@@ -1078,7 +1078,7 @@ static BOOL WINAPI CRYPT_AsnEncodeNameValue(DWORD dwCertEncodingType,
 }
 
 static BOOL CRYPT_AsnEncodeRdnAttr(DWORD dwCertEncodingType,
- CERT_RDN_ATTR *attr, CryptEncodeObjectExFunc nameValueEncodeFunc,
+ const CERT_RDN_ATTR *attr, CryptEncodeObjectExFunc nameValueEncodeFunc,
  BYTE *pbEncoded, DWORD *pcbEncoded)
 {
     DWORD bytesNeeded = 0, lenBytes, size;
@@ -1268,7 +1268,7 @@ static BOOL WINAPI CRYPT_DEREncodeItemsAsSet(DWORD dwCertEncodingType,
     return ret;
 }
 
-static BOOL CRYPT_AsnEncodeRdn(DWORD dwCertEncodingType, CERT_RDN *rdn,
+static BOOL CRYPT_AsnEncodeRdn(DWORD dwCertEncodingType, const CERT_RDN *rdn,
  CryptEncodeObjectExFunc nameValueEncodeFunc, BYTE *pbEncoded,
  DWORD *pcbEncoded)
 {
@@ -1881,7 +1881,7 @@ static BOOL WINAPI CRYPT_AsnEncodePKCSContentInfoInternal(
      cItem, dwFlags, pEncodePara, pbEncoded, pcbEncoded);
 }
 
-BOOL CRYPT_AsnEncodePKCSDigestedData(CRYPT_DIGESTED_DATA *digestedData,
+BOOL CRYPT_AsnEncodePKCSDigestedData(const CRYPT_DIGESTED_DATA *digestedData,
  void *pvData, DWORD *pcbData)
 {
     struct AsnEncodeSequenceItem items[] = {