endian.h: Remove additional blank lines.

src/include/compat/endian.h

 #define PORTABLE_ENDIAN_H__
 
 #if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
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 #	define __WINDOWS__
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 #endif
 
 #if defined(__linux__) || defined(__CYGWIN__)
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 #	include <endian.h>
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 #elif defined(__APPLE__)
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 #	include <libkern/OSByteOrder.h>
 
 #	define htobe16(x) OSSwapHostToBigInt16(x)
 #	define __BIG_ENDIAN    BIG_ENDIAN
 #	define __LITTLE_ENDIAN LITTLE_ENDIAN
 #	define __PDP_ENDIAN    PDP_ENDIAN
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 #elif defined(__OpenBSD__)
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 #	include <sys/endian.h>
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 #elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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 #	include <sys/endian.h>
 
 #	define be16toh(x) betoh16(x)
 
 #	define be64toh(x) betoh64(x)
 #	define le64toh(x) letoh64(x)
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 #elif defined(__WINDOWS__)
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 #	include <winsock2.h>
 #	include <sys/param.h>
 
 #	if BYTE_ORDER == LITTLE_ENDIAN
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 #		define htobe16(x) htons(x)
 #		define htole16(x) (x)
 #		define be16toh(x) ntohs(x)
 #		define htole64(x) (x)
 #		define be64toh(x) ntohll(x)
 #		define le64toh(x) (x)
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 #	elif BYTE_ORDER == BIG_ENDIAN
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 		/* that would be xbox 360 */
 #		define htobe16(x) (x)
 #		define htole16(x) __builtin_bswap16(x)
 #		define htole64(x) __builtin_bswap64(x)
 #		define be64toh(x) (x)
 #		define le64toh(x) __builtin_bswap64(x)
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 #	else
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 #		error byte order not supported
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 #	endif
 
 #	define __BYTE_ORDER    BYTE_ORDER
 #	define __BIG_ENDIAN    BIG_ENDIAN
 #	define __LITTLE_ENDIAN LITTLE_ENDIAN
 #	define __PDP_ENDIAN    PDP_ENDIAN
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 #else
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 #	error platform not supported
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 #endif
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 #endif