fix for http://forum.yacy-websuche.de/viewtopic.php?p=18563#p18563

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6580 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/crawler/ZURL.java

@@ -127,7 +127,6 @@ public class ZURL implements Iterable<ZURL.Entry> {
             final int workcount,
             String anycause) {
         assert executor != null;
-        assert executor.length() > 0;
         if (anycause == null) anycause = "unknown";
         Entry entry = new Entry(bentry, executor, workdate, workcount, anycause);
         entry.store();

source/de/anomic/http/server/HTTPDemon.java

@@ -252,7 +252,7 @@ public final class HTTPDemon implements serverHandler, Cloneable {
         // is always (but not only) called if an IO-dependent exception occurrs.
         log.logSevere("Unexpected Error. " + e.getClass().getName(),e);
         final String message = e.getMessage();
-        if (message.indexOf("heap space") > 0) Log.logException(e);
+        if (message != null && message.indexOf("heap space") > 0) Log.logException(e);
         return "501 Exception occurred: " + message;
     }