curl tool: fix compiler warning

#include "memdebug.h" /* keep this as LAST include */

/*

 * Macros ALWAYS_TRUE and ALWAYS_FALSE are used to avoid compiler warnings.

 */

#define ALWAYS_TRUE   (1)

#define ALWAYS_FALSE  (0)

#if defined(_MSC_VER) && !defined(__POCC__)

#  undef ALWAYS_TRUE

#  undef ALWAYS_FALSE

#  if (_MSC_VER < 1500)

#    define ALWAYS_TRUE   (0, 1)

#    define ALWAYS_FALSE  (1, 0)

#  else

#    define ALWAYS_TRUE \

__pragma(warning(push)) \

__pragma(warning(disable:4127)) \

(1) \

__pragma(warning(pop))

#    define ALWAYS_FALSE \

__pragma(warning(push)) \

__pragma(warning(disable:4127)) \

(0) \

__pragma(warning(pop))

#  endif

#endif

#ifdef WIN32

#  undef  PATH_MAX

#  define PATH_MAX MAX_PATH