Indentation fix

Author: Jon M. Mease

pandas/tests/test_groupby.py

@@ -636,7 +636,7 @@ def test_grouper_column_takes_precedence_over_level_with_warning(self):
             result = df_multi_both.groupby(['B', 'inner']).mean()
 
         expected = df_multi_both.groupby(['B',
-                                              pd.Grouper(key='inner')]).mean()
+                                          pd.Grouper(key='inner')]).mean()
         assert_frame_equal(result, expected)
 
         not_expected = df_multi_both.groupby(['B',