crypt32: Add I_CertUpdateStore stub.

dlls/crypt32/crypt32.spec

@@ -190,6 +190,7 @@
 @ stdcall CryptVerifyMessageSignature(ptr long ptr long ptr ptr ptr)
 @ stub CryptVerifyMessageSignatureWithKey
 @ stub CryptVerifySignatureU
+@ stdcall I_CertUpdateStore(ptr ptr long long)
 @ stdcall I_CryptAllocTls()
 @ stdcall I_CryptCreateLruCache(ptr ptr)
 @ stdcall I_CryptCreateLruEntry(ptr long long)

dlls/crypt32/main.c

@@ -60,6 +60,16 @@ HCRYPTPROV CRYPT_GetDefaultProvider(void)
     return hDefProv;
 }
 
+/* Appears to be called to update the contents of store1 with those in store2.
+ * The second two parameters are unknown.
+ */
+BOOL WINAPI I_CertUpdateStore(HCERTSTORE store1, HCERTSTORE store2, DWORD unk0,
+ DWORD unk1)
+{
+    FIXME("(%p, %p, %08x, %08x)\n", store1, store2, unk0, unk1);
+    return FALSE;
+}
+
 typedef void * HLRUCACHE;
 
 /* this function is called by Internet Explorer when it is about to verify a