Eliminate another warning.

node/Hashtable.hpp

@@ -383,7 +383,7 @@ private:
 	static inline unsigned long _hc(const uint32_t i)
 	{
 		// In the uint32_t case we use a simple multiplier for hashing to ensure coverage
-		return ((unsigned long)i * (unsigned long)2654435761);
+		return ((unsigned long)i * (unsigned long)0x9e3779b1);
 	}
 
 	inline void _grow()