crypt32: Add a stub for CryptEncryptMessage.

dlls/crypt32/crypt32.spec

diff --git a/dlls/crypt32/crypt32.spec b/dlls/crypt32/crypt32.spec
index f531bf6..d9cd9a8 100644
--- a/dlls/crypt32/crypt32.spec
+++ b/dlls/crypt32/crypt32.spec
@@ -113,7 +113,7 @@
 @ stub CryptDecryptMessage
 @ stdcall CryptEncodeObject(long str ptr ptr ptr)
 @ stdcall CryptEncodeObjectEx(long str ptr long ptr ptr ptr)
-@ stub CryptEncryptMessage
+@ stdcall CryptEncryptMessage(ptr long ptr ptr long ptr ptr)
 @ stub CryptEnumOIDFunction
 @ stdcall CryptEnumOIDInfo(long long ptr ptr)
 @ stub CryptEnumProvidersU

dlls/crypt32/message.c

diff --git a/dlls/crypt32/message.c b/dlls/crypt32/message.c
index 2d67e4c..b57c407 100644
--- a/dlls/crypt32/message.c
+++ b/dlls/crypt32/message.c
@@ -531,3 +531,14 @@
         CryptReleaseContext(hCryptProv, 0);
     return ret;
 }
+
+BOOL WINAPI CryptEncryptMessage(PCRYPT_ENCRYPT_MESSAGE_PARA pEncryptPara,
+ DWORD cRecipientCert, PCCERT_CONTEXT rgpRecipientCert[],
+ const BYTE *pbToBeEncrypted, DWORD cbToBeEncrypted, BYTE *pbEncryptedBlob,
+ DWORD *pcbEncryptedBlob)
+{
+    FIXME("(%p, %d, %p, %p, %d, %p, %p): stub\n", pEncryptPara, cRecipientCert,
+     rgpRecipientCert, pbToBeEncrypted, cbToBeEncrypted, pbEncryptedBlob,
+     pcbEncryptedBlob);
+    return FALSE;
+}