We can't look for null 'table', because that might extraneously reference

some not-actually-derived table. We need to be looking at nTables because
that's the real indicator of whether or not there are more derived tables
to be looking at.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@571 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/jdbc/jora/Cursor.java

@@ -36,9 +36,9 @@ public class Cursor {
     public Object next()
 	throws SQLException
     {  
-        // if we closed everything up after the last call to next(), we'll
-        // have a null table here and should bail immediately
-        if (table == null) {
+        // if we closed everything up after the last call to next(),
+        // nTables will be zero here and we should bail immediately
+        if (nTables == 0) {
             return null;
         }