fix for http://forum.yacy-websuche.de/viewtopic.php?p=1092#p1092

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3999 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/http/httpdFileHandler.java

@@ -601,13 +601,14 @@ public final class httpdFileHandler extends httpdAbstractHandler implements http
                             requestHeader.put(httpHeader.CONNECTION_PROP_PATH, path);
                             // in case that there are no args given, args = null or empty hashmap
                             Object tmp = invokeServlet(targetClass, requestHeader, args);
-                            if(tmp instanceof servletProperties){
+                            if (tp == null) {
+                                // if no args given, then tp will be an empty Hashtable object (not null)
+                                tp = new servletProperties();
+                            } else if (tmp instanceof servletProperties) {
                                 tp = (servletProperties) tmp;
                             } else {
                                 tp = new servletProperties((serverObjects) tmp);
                             }
-                            // if no args given , then tp will be an empty Hashtable object (not null)
-                            if (tp == null) tp = new servletProperties();
                             // check if the servlets requests authentification
                             if (tp.containsKey(servletProperties.ACTION_AUTHENTICATE)) {
                                 // handle brute-force protection