Reverting the memory leak patch for MySQL. Problems have been reported with the grid server after running for several hours

OpenSim/Data/MSSQL/AutoClosingSqlCommand.cs

@@ -197,11 +197,20 @@ namespace OpenSim.Data.MSSQL
         public void Dispose()
         {
             SqlConnection conn = realCommand.Connection;
-            try { realCommand.Dispose(); }
+            try
+            {
+                realCommand.Dispose();
+            }
             finally
             {
-                try { conn.Dispose(); }
-                finally { }
+                try
+                {
+                    conn.Close();
+                }
+                finally
+                {
+                    conn.Dispose();
+                }
             }
         }