Add some bullet-proofing against invalid model indices

qrenderdoc/Windows/EventBrowser.cpp

@@ -439,6 +439,9 @@ struct EventItemModel : public QAbstractItemModel
     if(index.internalId() == TagCaptureStart)
       return createIndex(0, 0, TagRoot);
 
+    if(index.internalId() >= m_Draws.size())
+      return QModelIndex();
+
     // otherwise it's a draw
     const DrawcallDescription *draw = m_Draws[index.internalId()];
 
@@ -559,6 +562,9 @@ struct EventItemModel : public QAbstractItemModel
     {
       uint32_t eid = index.internalId();
 
+      if(eid >= m_Draws.size())
+        return QVariant();
+
       if(role == ROLE_SELECTED_EID)
         return eid;