This fixes #1282 (#1283)
This fixes #1282 (#1283)

Modify `get_weighted_examples` so that `weighted_examples` is called
with no arguments.
jon-morra-zefr/vowpal_wabbit,hal3/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,deaktator/vowpal_wabbit,deaktator/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,deaktator/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,hal3/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,hal3/vowpal_wabbit,deaktator/vowpal_wabbit,hal3/vowpal_wabbit,hal3/vowpal_wabbit,hal3/vowpal_wabbit,deaktator/vowpal_wabbit,hal3/vowpal_wabbit,hal3/vowpal_wabbit,deaktator/vowpal_wabbit,deaktator/vowpal_wabbit,hal3/vowpal_wabbit,deaktator/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,deaktator/vowpal_wabbit,hal3/vowpal_wabbit,deaktator/vowpal_wabbit,deaktator/vowpal_wabbit,jon-morra-zefr/vowpal_wabbit,hal3/vowpal_wabbit