LibGUI: Actually store the column in MultiView::set_model_column()

We were only forwarding the value to the subviews, but not storing it
in m_model_column. This would cause MultiView::model_column() to return
the wrong value.

Thanks to Daniel Bos for spotting this! :^)

1 files changed, 3 insertions, 0 deletions

diff --git a/Libraries/LibGUI/MultiView.cpp b/Libraries/LibGUI/MultiView.cpp
index 162a6c32c4..87334be9e4 100644
--- a/Libraries/LibGUI/MultiView.cpp
+++ b/Libraries/LibGUI/MultiView.cpp
@@ -137,6 +137,9 @@ void MultiView::set_model(RefPtr<Model> model)
 
 void MultiView::set_model_column(int column)
 {
+    if (m_model_column == column)
+        return;
+    m_model_column = column;
     m_item_view->set_model_column(column);
     m_columns_view->set_model_column(column);
 }