cc-classes: add missing virtual destructors

src/gui/components/cc_button_select.h

@@ -37,6 +37,7 @@ class CCButtonSelect
 
 	public:
 		CCButtonSelect();
+		virtual ~CCButtonSelect(){};
 
 		///returns selected button object, return value as pointer to object, NULL means nothing is selected
 		CComponentsButton* getSelectedButtonObject();

src/gui/components/cc_frm_button.h

@@ -132,6 +132,8 @@ class CComponentsButton : public CComponentsFrmChain, public CCTextScreen
 					int shadow_mode = CC_SHADOW_OFF,
 					fb_pixel_t color_frame = COL_FRAME_PLUS_0, fb_pixel_t color_body = COL_BUTTON_BODY, fb_pixel_t color_shadow = COL_SHADOW_PLUS_0);
 
+		virtual ~CComponentsButton(){};
+
 		///set text color
 		void setButtonTextColor(fb_pixel_t caption_color){cc_btn_text_col = caption_color;};
 

src/gui/components/cc_frm_chain.h

@@ -74,7 +74,8 @@ class CComponentsFrmChain : public CComponentsForm
 					fb_pixel_t& color_frame = COL_FRAME_PLUS_0,
 					fb_pixel_t& color_body = COL_MENUHEAD_PLUS_0,
 					fb_pixel_t& color_shadow = COL_SHADOW_PLUS_0);
-// 		~CComponentsFrmChain(); //inherited from CComponentsForm
+
+		virtual ~CComponentsFrmChain(){};
 
 		///defines mode for arrangement direction of items, see also chn_direction
 		virtual void setDirection(int direction);

src/gui/components/cc_frm_footer.h

@@ -81,6 +81,8 @@ class CComponentsFooter : public CComponentsHeader, public CCButtonSelect
 					fb_pixel_t color_body = COL_MENUFOOT_PLUS_0,
 					fb_pixel_t color_shadow = COL_SHADOW_PLUS_0,
 					int sizeMode = CC_HEADER_SIZE_LARGE);
+		
+		virtual ~CComponentsFooter(){};
 
 		///add button labels with string label type as content, count as size_t, chain_width as int, label width as int
 		void setButtonLabels(const struct button_label_cc * const content, const size_t& label_count, const int& chain_width = 0, const int& label_width = 0);

src/gui/components/cc_frm_window.h

@@ -204,6 +204,8 @@ class CComponentsWindow : public CComponentsForm, CCHeaderTypes
 					fb_pixel_t color_body = COL_MENUCONTENT_PLUS_0,
 					fb_pixel_t color_shadow = COL_SHADOW_PLUS_0);
 
+		virtual ~CComponentsWindow(){};
+
 		/**
 		* Add an item to body object, also usable is addCCItem() to add items to the window object
 		* @param[in]	cc_Item