crypt32: Fix chain error status when a cert's issuer can't be found.

dlls/crypt32/chain.c

@@ -917,6 +917,7 @@ static BOOL CRYPT_BuildSimpleChain(PCertificateChainEngine engine,
         else
         {
             TRACE("Couldn't find issuer, halting chain creation\n");
+            chain->TrustStatus.dwErrorStatus |= CERT_TRUST_IS_PARTIAL_CHAIN;
             break;
         }
     }

dlls/crypt32/tests/chain.c

@@ -1595,7 +1595,7 @@ static ChainCheck chainCheckNoStore[] = {
    { { 0, CERT_TRUST_HAS_PREFERRED_ISSUER },
      { CERT_TRUST_IS_PARTIAL_CHAIN, 0 },
      1, simpleStatus8NoStore },
-   TODO_ERROR | TODO_INFO },
+   TODO_INFO },
 };
 
 /* Wednesday, Oct 1, 2007 */