Qt/debugger: only resize the columns of the code view once per update

Putting the columns to resizeToContents causes way too much resizes per updates which can cause severe lags and even crashes.  This only does one resize at the end of the columns.

Source/Core/DolphinQt2/Debugger/CodeViewWidget.cpp

@@ -44,8 +44,7 @@ CodeViewWidget::CodeViewWidget()
 
   for (int i = 0; i < columnCount(); i++)
   {
-    horizontalHeader()->setSectionResizeMode(i, i == 0 ? QHeaderView::Fixed :
-                                                         QHeaderView::ResizeToContents);
+    horizontalHeader()->setSectionResizeMode(i, QHeaderView::Fixed);
   }
 
   verticalHeader()->hide();
@@ -174,6 +173,7 @@ void CodeViewWidget::Update()
     }
   }
 
+  resizeColumnsToContents();
   setColumnWidth(0, 24 + 5);
 
   g_symbolDB.FillInCallers();