bitbake: depexp: fix typo in variable name

(Bitbake rev: e3b8585738abea96a9fd1d1204731004a35e0bc9)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/depexp.py

@@ -154,7 +154,7 @@ class DepExplorer(gtk.Window):
 
     def on_cursor_changed(self, selection):
         (model, it) = selection.get_selected()
-        if iter is None:
+        if it is None:
             current_package = None
         else:
             current_package = model.get_value(it, COL_PKG_NAME)