provider does not tolerate null passwords well

git-svn-id: http://svn.igniterealtime.org/svn/repos/openfire/trunk@9823 b35dd754-fafc-0310-a699-88a17e54d16e

src/java/org/jivesoftware/database/DefaultConnectionProvider.java

@@ -90,7 +90,7 @@ public class DefaultConnectionProvider implements ConnectionProvider {
         settings.setProperty("proxool.test-after-use", testAfterUse.toString());
         settings.setProperty("proxool.house-keeping-test-sql", testSQL);
         settings.setProperty("user", getUsername());
-        settings.setProperty("password", getPassword());
+        settings.setProperty("password", (getPassword() != null ? getPassword() : ""));
     }
 
     public void restart() {