fix in last_node fetcher -- trunk

source/texk/web2c/luatexdir/luatex_svnversion.h

-#define luatex_svn_revision 7097
+#define luatex_svn_revision 7106

source/texk/web2c/luatexdir/tex/nesting.c

@@ -273,8 +273,8 @@ halfword pop_tail(void)
             while (vlink(n) != cur_list.tail_field)
                 n = vlink(n);
         }
-        flush_node(cur_list.tail_field);
         cur_list.tail_field = n;
+        alink(r) = null;
         vlink(n) = null;
         return r;
     } else {