fix gcc 4.7.x warnings

lib/sectionsdclient/sectionsdclient.h

@@ -72,6 +72,7 @@ class CSectionsdClient : private CBasicClient
 	char * parseExtendedEvents(char * dp, CEPGData * epgdata);
 
  public:
+	virtual ~CSectionsdClient() {};
 	enum SIlanguageMode_t {
 		ALL,
 		FIRST_FIRST,

lib/timerdclient/timerdclient.h

@@ -41,6 +41,7 @@ class CTimerdClient:private CBasicClient
 	virtual const          char * getSocketName() const;
 
  public:
+		virtual ~CTimerdClient() {};
 		enum events
 		{
 			EVT_SHUTDOWN = 1,

src/gui/widget/stringinput_ext.h

@@ -99,6 +99,7 @@ class CExtendedInput_Item
 		virtual bool isSelectable(){return true;};
 
 		virtual void keyPressed( int /*key*/ ){};
+		virtual ~CExtendedInput_Item() {};
 };
 
 class CExtendedInput_Item_Spacer : public CExtendedInput_Item

src/zapit/include/zapit/capmt.h

@@ -63,6 +63,7 @@ class CCam : public CBasicClient
 			CAPMT_UPDATE	= 0x05
 		};
 		CCam();
+		virtual ~CCam() {};
 		bool sendMessage(const char * const data, const size_t length, bool update = false);
 		bool makeCaPmt(CZapitChannel * channel, uint8_t list = CAPMT_ONLY, const CaIdVector &caids = CaIdVector());
 		bool setCaPmt(bool update = false);

src/zapit/include/zapit/client/zapitclient.h

@@ -514,6 +514,8 @@ class CZapitClient:public CBasicClient
 	  ein beliebiges Event abmelden
 	*/
 	void unRegisterEvent(const unsigned int eventID, const unsigned int clientID);
+
+	virtual ~CZapitClient() {};
 };
 
 #define PAL	0