nigative win/loss

OWTrack/MainForm.cs

@@ -145,16 +145,22 @@ namespace OWTrack
         }
 
         private void reduceWinBut_Click(object sender, EventArgs e)
+        {
+            if (tr.wins > 0)
             {
                 tr.reduceWin();
                 update();
             }
+        }
 
         private void reduceLossBut_Click(object sender, EventArgs e)
+        {
+            if (tr.losses > 0)
             {
                 tr.rediceLoss();
                 update();
             }
+        }        
 
         private void clearBut_Click(object sender, EventArgs e)
         {