Stop finding paths when enough are found (RIPD-156)

src/ripple/module/app/paths/Pathfinder.cpp

@@ -218,6 +218,8 @@ bool Pathfinder::findPaths (
        if (costedPath.first <= iLevel)
        {
            getPaths(costedPath.second);
+           if (mCompletePaths.size () > PATHFINDER_MAX_COMPLETE_PATHS)
+               break;
        }
     }
 

src/ripple/module/app/paths/Tuning.h

@@ -25,7 +25,7 @@ namespace ripple {
 // VFALCO TODO Why 40?  is the number 40 part of protocol?
 const int CALC_NODE_DELIVER_MAX_LOOPS = 40;
 const int NODE_ADVANCE_MAX_LOOPS = 100;
-
+const int PATHFINDER_MAX_COMPLETE_PATHS = 1000;
 } // ripple
 
 #endif