crypt32/tests: make sure to use a return value (LLVM/Clang) (5/5)

[Austin English]

-- 
-Austin
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diff --git a/dlls/crypt32/tests/oid.c b/dlls/crypt32/tests/oid.c
index 030a548..b661407 100644
--- a/dlls/crypt32/tests/oid.c
+++ b/dlls/crypt32/tests/oid.c
@@ -451,6 +451,7 @@ static void test_registerDefaultOIDFunction(void)
     /* Repeat a few tests on the normal encoding type */
     ret = CryptRegisterDefaultOIDFunction(X509_ASN_ENCODING,
      "CertDllOpenStoreProv", 0, bogusDll);
+    ok(ret, "CryptRegisterDefaultOIDFunction failed\n");
     ret = CryptUnregisterDefaultOIDFunction(X509_ASN_ENCODING,
      "CertDllOpenStoreProv", bogusDll);
     ok(ret, "CryptUnregisterDefaultOIDFunction failed\n");