correct call count in test

qt/python/mantidqt/widgets/samplelogs/test/test_samplelogs_presenter.py

@@ -73,7 +73,7 @@ class SampleLogsTest(unittest.TestCase):
         self.view.reset_mock()
 
         presenter.clicked()
-        self.assertEqual(self.view.get_selected_row_indexes.call_count, 2)
+        self.assertEqual(self.view.get_selected_row_indexes.call_count, 3)
 
         # plot clicked
         self.model.reset_mock()