Add 'walkLedger' function.

src/Ledger.cpp

@@ -957,6 +957,12 @@ uint256 Ledger::getRippleStateIndex(const NewcoinAddress& naA, const NewcoinAddr
 	return s.getSHA512Half();
 }
 
-
+bool Ledger::walkLedger()
+{
+	std::vector<SHAMapMissingNode> missingNodes;
+	mAccountStateMap->walkMap(missingNodes, 1);
+	mTransactionMap->walkMap(missingNodes, 1);
+	return missingNodes.empty();
+}
 
 // vim:ts=4

src/Ledger.h

@@ -280,6 +280,8 @@ public:
 
 	void addJson(Json::Value&, int options);
 
+	bool walkLedger();
+
 	static bool unitTest();
 };