Avoid redundant per-frame calls to getDbProp("UI:SAVE:SHOW_RETICLE")

--HG--
branch : kaetemi-optimize

code/ryzom/client/src/entity_cl.cpp

@@ -3041,7 +3041,9 @@ void	CEntityCL::updateVisiblePostPos(const NLMISC::TTime &/* currentTimeInMs */,
 
 	bool bShowReticle = true;
 
-	CCDBNodeLeaf* node = NLGUI::CDBManager::getInstance()->getDbProp("UI:SAVE:SHOW_RETICLE");
+	CCDBNodeLeaf *node = (CCDBNodeLeaf *)_ShowReticleLeaf ? &*_ShowReticleLeaf
+		: (_ShowReticleLeaf = NLGUI::CDBManager::getInstance()->getDbProp("UI:SAVE:SHOW_RETICLE", false));
+
 	if (node)
 	{
 		bShowReticle = node->getValueBool();

code/ryzom/client/src/entity_cl.h

@@ -1113,6 +1113,8 @@ protected:
 
 	static NLMISC::CRefPtr<NLMISC::CCDBNodeLeaf>		_OpacityMinNodeLeaf;
 
+	NLMISC::CRefPtr<NLMISC::CCDBNodeLeaf> _ShowReticleLeaf;
+
 protected:
 	/**
 	 * Change the box position.