# HG changeset patch
# User Ludovic Chabant <ludovic@chabant.com>
# Date 1518758170 28800
# Node ID d4e0c53aa6e8f80b653bc8be8e741fc6429d1214
# Parent  d464c1b1d6868451aec404da087074af6cdede0a
serve: Fix debug rendering for page iterators.

diff -r d464c1b1d686 -r d4e0c53aa6e8 piecrust/dataproviders/pageiterator.py
--- a/piecrust/dataproviders/pageiterator.py	Thu Feb 15 21:15:49 2018 -0800
+++ b/piecrust/dataproviders/pageiterator.py	Thu Feb 15 21:16:10 2018 -0800
@@ -82,7 +82,8 @@
     def _onIteration(self, it):
         if not self._iterated:
             rcs = self._app.env.render_ctx_stack
-            rcs.current_ctx.addUsedSource(it._source)
+            if rcs.current_ctx is not None:
+                rcs.current_ctx.addUsedSource(it._source)
             self._iterated = True
 
     def _addSource(self, source):