# HG changeset patch
# User Ludovic Chabant <ludovic@chabant.com>
# Date 1439446816 25200
# Node ID 703ea5d76f33593733a438965d875b47f2f5016c
# Parent  93b656f0af543b10e47c0b0a8a95305ebe48ddb9
serve: Don't crash when looking at the debug info in a stand-alone window.

diff -r 93b656f0af54 -r 703ea5d76f33 piecrust/data/provider.py
--- a/piecrust/data/provider.py	Wed Aug 12 23:18:35 2015 -0700
+++ b/piecrust/data/provider.py	Wed Aug 12 23:20:16 2015 -0700
@@ -178,7 +178,8 @@
     def _onIteration(self):
         if not self._ctx_set:
             eis = self._page.app.env.exec_info_stack
-            eis.current_page_info.render_ctx.addUsedSource(self._source)
+            if eis.current_page_info:
+                eis.current_page_info.render_ctx.addUsedSource(self._source)
             self._ctx_set = True