Properly fixed previous bugfix (RAND_MAX+1 will wrap around on e.g. linux).

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@7368 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/karts/controller/ai_base_controller.cpp

@@ -54,9 +54,10 @@ AIBaseController::AIBaseController(Kart *kart,
             // best way, potentially depending on race position etc.
             int r = rand();
             int indx = (int)(
-                             (r / (float)(RAND_MAX+1)) * next.size()
+                             (r / (float)(RAND_MAX)+1.0f) * next.size()
                              );
-            
+            // In case of rounding errors
+            if(indx>(int)next.size()) indx--;
             m_successor_index.push_back(indx);
             m_next_node_index.push_back(next[indx]);