quickfix for http://www.yacy-forum.de/viewtopic.php?t=2705

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@2415 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/plasma/plasmaCrawlEURL.java

@@ -265,6 +265,7 @@ public class plasmaCrawlEURL extends indexURL {
         public void store() {
 	        // stores the values from the object variables into the database
             if (this.stored) return;
+            if (this.hash == null) return;
             String initdatestr = kelondroBase64Order.enhancedCoder.encodeLong(initdate.getTime() / 86400000, urlDateLength);
             String trydatestr = kelondroBase64Order.enhancedCoder.encodeLong(trydate.getTime() / 86400000, urlDateLength);