Ticket #2744: context-processor-returns-none.patch

template/context.py

@@ -94 +94 @@
         else:
             processors = tuple(processors)
         for processor in get_standard_processors() + processors:
-            self.update(processor(request))
+            new_data = processor(request)
+            if new_data:
+                self.update(new_data)