Cleanup some harmless issues found by Clang

limelight-common/ByteBuffer.h

@@ -5,6 +5,7 @@
 #define BYTE_ORDER_LITTLE 1
 #define BYTE_ORDER_BIG 2
 
+#ifndef HTONLL
 #define HTONLL(x) \
 	((((x) & 0xff00000000000000ull) >> 56)				      \
 	| (((x) & 0x00ff000000000000ull) >> 40)				      \
@@ -14,6 +15,7 @@
 	| (((x) & 0x0000000000ff0000ull) << 24)				      \
 	| (((x) & 0x000000000000ff00ull) << 40)				      \
 	| (((x) & 0x00000000000000ffull) << 56))
+#endif
 
 typedef struct _BYTE_BUFFER {
 	char* buffer;