Index: JdbcConnPoolStatsProvider.java
===================================================================
--- JdbcConnPoolStatsProvider.java	(revision 11565)
+++ JdbcConnPoolStatsProvider.java	(working copy)
@@ -207,6 +207,7 @@
             }
             //Decrement counter
             synchronized(numConnFree) {
+                long numConnFreeToSet = (numConnFree.getCurrent() - 1 >= 0) ? numConnFree.getCurrent() - 1 : 0;
                 numConnFree.setCurrent(numConnFree.getCurrent() - 1);
             }
         }