Added CloseDBConnection() to replace the old CloseReaderCommand(). This will close the MySQLConnection attached to a MySQLCommand. I'm not sure if this accounts for every time a database connection needs to be closed, but it matches up 1:1 with the places where the database connection was previously being closed

OpenSim/Data/MySQL/MySQLAuthenticationData.cs

@@ -82,12 +82,16 @@ namespace OpenSim.Data.MySQL
                             ret.Data[s] = result[s].ToString();
                         }
 
+                        CloseDBConnection(cmd);
                         return ret;
                     }
+                    else
+                    {
+                        CloseDBConnection(cmd);
+                        return null;
+                    }
                 }
             }
-
-            return null;
         }
 
         public bool Store(AuthenticationData data)

OpenSim/Data/MySQL/MySQLFramework.cs

@@ -47,7 +47,6 @@ namespace OpenSim.Data.MySQL
         protected MySqlFramework(string connectionString)
         {
             m_Connection = new MySqlConnection(connectionString);
-
             m_Connection.Open();
         }
 
@@ -82,8 +81,7 @@ namespace OpenSim.Data.MySQL
                             errorSeen = true;
 
                             m_Connection.Close();
-                            MySqlConnection newConnection = (MySqlConnection)
+                            MySqlConnection newConnection = (MySqlConnection)((ICloneable)m_Connection).Clone();
-                                    ((ICloneable)m_Connection).Clone();
                             m_Connection.Dispose();
                             m_Connection = newConnection;
                             m_Connection.Open();
@@ -104,14 +102,16 @@ namespace OpenSim.Data.MySQL
         
         protected IDataReader ExecuteReader(MySqlCommand cmd)
         {
-            MySqlConnection newConnection = (MySqlConnection)
+            MySqlConnection newConnection = (MySqlConnection)((ICloneable)m_Connection).Clone();
-                    ((ICloneable)m_Connection).Clone();
-            
             newConnection.Open();
 
             cmd.Connection = newConnection;
-
             return cmd.ExecuteReader();
         }
+
+        protected void CloseDBConnection(MySqlCommand cmd)
+        {
+            cmd.Connection.Dispose();
+        }
     }
 }

OpenSim/Data/MySQL/MySQLRegionData.cs

@@ -172,6 +172,8 @@ namespace OpenSim.Data.MySQL
 
                     retList.Add(ret);
                 }
+
+                CloseDBConnection(cmd);
             }
 
             return retList;

OpenSim/Data/MySQL/MySQLUserAccountData.cs

@@ -97,12 +97,16 @@ namespace OpenSim.Data.MySQL
                             ret.Data[s] = result[s].ToString();
                         }
 
+                        CloseDBConnection(cmd);
                         return ret;
                     }
+                    else
+                    {
+                        CloseDBConnection(cmd);
+                        return null;
+                    }
                 }
             }
-
-            return null;
         }
 
         public bool Store(UserAccountData data)