crypt32: Use skip to avoid failures where support is missing.

dlls/crypt32/tests/encode.c

@@ -3086,6 +3086,11 @@ static void test_encodeCRLIssuingDistPoint(DWORD dwEncoding)
 
     ret = CryptEncodeObjectEx(dwEncoding, X509_ISSUING_DIST_POINT, NULL,
      CRYPT_ENCODE_ALLOC_FLAG, NULL, (BYTE *)&buf, &size);
+    if (!ret && GetLastError() == ERROR_FILE_NOT_FOUND)
+    {
+        skip("no X509_ISSUING_DIST_POINT encode support\n");
+        return;
+    }
     ok(!ret && GetLastError() == STATUS_ACCESS_VIOLATION,
      "Expected STATUS_ACCESS_VIOLATION, got %08x\n", GetLastError());
     ret = CryptEncodeObjectEx(dwEncoding, X509_ISSUING_DIST_POINT, &point,
@@ -3218,6 +3223,11 @@ static void test_decodeCRLIssuingDistPoint(DWORD dwEncoding)
     ret = CryptDecodeObjectEx(dwEncoding, X509_ISSUING_DIST_POINT,
      emptySequence, emptySequence[1] + 2, CRYPT_DECODE_ALLOC_FLAG, NULL,
      (BYTE *)&buf, &size);
+    if (!ret && GetLastError() == ERROR_FILE_NOT_FOUND)
+    {
+        skip("no X509_ISSUING_DIST_POINT decode support\n");
+        return;
+    }
     ok(ret, "CryptDecodeObjectEx failed: %08x\n", GetLastError());
     if (ret)
     {