Don't crash in data() if no data has ever been set. Allow adding columns

Author: baldurk

qrenderdoc/Widgets/Extended/RDTreeWidget.cpp

@@ -260,7 +260,7 @@ RDTreeWidgetItem::~RDTreeWidgetItem()
 
 QVariant RDTreeWidgetItem::data(int column, int role) const
 {
-  if(column >= m_data->count())
+  if(m_data == NULL || column >= m_data->count())
     return QVariant();
 
   const QVector<RoleData> &dataVec = (*m_data)[column];

qrenderdoc/Widgets/Extended/RDTreeWidget.h

@@ -50,7 +50,10 @@ class RDTreeWidgetItem
   inline void setIcon(int column, const QIcon &icon)
   {
     if(column >= m_icons.size())
-      return;
+    {
+      m_text.resize(column + 1);
+      m_icons.resize(m_text.size());
+    }
 
     m_icons[column] = icon;
     dataChanged(column, Qt::DecorationRole);
@@ -94,7 +97,10 @@ class RDTreeWidgetItem
   inline void setText(int column, const QVariant &value)
   {
     if(column >= m_text.size())
-      return;
+    {
+      m_text.resize(column + 1);
+      m_icons.resize(m_text.size());
+    }
 
     m_text[column] = value;
     dataChanged(column, Qt::DisplayRole);