different initialization of empty variables in alternative constructor. This leads to wrong interpretation of user credentials, resulting in unnecessary "@" in front of host, and different urlhash values.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7646 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/net/yacy/cora/document/MultiProtocolURI.java

@@ -399,9 +399,9 @@ public class MultiProtocolURI implements Serializable, Comparable<MultiProtocolU
         this.host = host;
         this.port = port;
         this.path = path;
-        this.quest = "";
-        this.userInfo = "";
-        this.ref = "";
+        this.quest = null;
+        this.userInfo = null;
+        this.ref = null;
         identRef();
         identQuest();
         escape();