fixed #516 crashes of daemon on 32-bit systems

src/sphinxexpr.cpp

@@ -2739,14 +2739,14 @@ struct ExprNode_t
 
 	union
 	{
-		int64_t			m_iConst;		///< constant value, for TOK_CONST_INT type
+		int64_t			m_iConst = 0;	///< constant value, for TOK_CONST_INT type
 		float			m_fConst;		///< constant value, for TOK_CONST_FLOAT type
 		int				m_iFunc;		///< built-in function id, for TOK_FUNC type
 		int				m_iArgs;		///< args count, for arglist (token==',') type
 		ConstList_c *	m_pConsts;		///< constants list, for TOK_CONST_LIST type
 		MapArg_c	*	m_pMapArg;		///< map argument (maps name to const or name to expr), for TOK_MAP_ARG type
 		const char	*	m_sIdent;		///< pointer to const char, for TOK_IDENT type
-		SphAttr_t	*	m_pAttr = nullptr;	///< pointer to 64-bit value, for TOK_ITERATOR type
+		SphAttr_t	*	m_pAttr;		///< pointer to 64-bit value, for TOK_ITERATOR type
 	};
 	int				m_iLeft = -1;
 	int				m_iRight = -1;

src/sphinxrt.cpp

@@ -184,8 +184,8 @@ struct RtWord_T
 {
 	union
 	{
-		WORDID					m_uWordID;	///< my keyword id
-		const BYTE *			m_sWord = nullptr;
+		WORDID					m_uWordID = 0;	///< my keyword id
+		const BYTE *			m_sWord;
 	};
 	DWORD						m_uDocs = 0;	///< document count (for stats and/or BM25)
 	DWORD						m_uHits = 0;	///< hit count (for stats and/or BM25)