Provide some definitions missing in MinGW's headers

#include <sspi.h>

#include <rpc.h>

/* Provide some definitions missing in MinGW's headers */

#ifndef SEC_I_CONTEXT_EXPIRED

# define SEC_I_CONTEXT_EXPIRED ((HRESULT)0x00090317L)

#endif

#ifndef SEC_E_BUFFER_TOO_SMALL

# define SEC_E_BUFFER_TOO_SMALL ((HRESULT)0x80090321L)

#endif

#ifndef SEC_E_CRYPTO_SYSTEM_INVALID

# define SEC_E_CRYPTO_SYSTEM_INVALID ((HRESULT)0x80090337L)

#endif

#ifndef SEC_E_MESSAGE_ALTERED

# define SEC_E_MESSAGE_ALTERED ((HRESULT)0x8009030FL)

#endif

#ifndef SEC_E_OUT_OF_SEQUENCE

# define SEC_E_OUT_OF_SEQUENCE ((HRESULT)0x80090310L)

#endif

CURLcode Curl_sspi_global_init(void);

void Curl_sspi_global_cleanup(void);