[PATCH] winhttp: check for endCert being NULL (Coverity)

[Juan Lang]

Hi Marcus,

-            if (ret)
+            if (ret && endCert)
                 ret = netconn_verify_cert( endCert, store, server );

In this case you'll return TRUE if endCert is NULL, implying that the
certificate chain is valid when it most likely isn't, or at least its
validity couldn't be verified.  If you could add an "else ret = FALSE"
branch that'd be preferable.

Thanks,
--Juan