Fix the giant FlatListView leak of std::pair objects that causes an equivalent...

Fix the giant FlatListView leak of std::pair objects that causes an equivalent number of LLSD objects to leak

indra/llui/llflatlistview.cpp

@@ -505,6 +505,11 @@ LLFlatListView::LLFlatListView(const LLFlatListView::Params& p)
 	}
 };
 
+LLFlatListView::~LLFlatListView()
+{
+	delete_and_clear(mItemPairs);
+}
+
 // virtual
 void LLFlatListView::draw()
 {

indra/llui/llflatlistview.h

@@ -299,6 +299,7 @@ class LLFlatListView : public LLScrollContainer, public LLEditMenuHandler
 
 	virtual S32	notify(const LLSD& info) ;
 
+	virtual ~LLFlatListView();
 protected:
 
 	/** Pairs LLpanel representing a single item LLPanel and LLSD associated with it */