Update python/ql/test/query-tests/Exceptions/generators/test.py

Co-Authored-By: Rasmus Wriedt Larsen <rasmuswriedtlarsen@gmail.com>

Author: BekaValentine

python/ql/test/query-tests/Exceptions/generators/test.py

@@ -50,3 +50,6 @@ def next_in_comp(seq, fields):
 
 def ok5(seq):
     yield next(iter([]), 'foo')
+
+def ok6(seq):
+    yield next(iter([]), default='foo')