Fix crash on undo speed change

src/timeline2/model/clipmodel.cpp

@@ -203,7 +203,7 @@ bool ClipModel::requestResize(int size, bool right, Fun &undo, Fun &redo, bool l
     } else {
         roles.push_back(TimelineModel::OutPointRole);
     }
-    
+
     Fun operation = [this, inPoint, outPoint, roles, track_operation]() {
         if (track_operation()) {
             setInOut(inPoint, outPoint);
@@ -512,9 +512,11 @@ Fun ClipModel::useTimewarpProducer_lambda(double speed)
     return [speed, this]() {
         qDebug() << "timeWarp producer" << speed;
         refreshProducerFromBin(m_currentTrackId, m_currentState, speed);
-        if (auto ptr = m_parent.lock()) {
-            QModelIndex ix = ptr->makeClipIndexFromID(m_id);
-            ptr->notifyChange(ix, ix, TimelineModel::SpeedRole);
+        if (m_currentTrackId > -1) {
+            if (auto ptr = m_parent.lock()) {
+                QModelIndex ix = ptr->makeClipIndexFromID(m_id);
+                ptr->notifyChange(ix, ix, TimelineModel::SpeedRole);
+            }
         }
         return true;
     };

src/timeline2/model/timelinemodel.cpp

@@ -1904,7 +1904,7 @@ int TimelineModel::requestClipResizeAndTimeWarp(int itemId, int size, bool right
             pos += getItemPlaytime(id) - size;
         }
         result = getTrackById(tid)->requestClipDeletion(id, true, true, undo, redo, false, true);
-        result = result && requestClipTimeWarp(id, speed, false, undo, redo);
+        result = result && requestClipTimeWarp(id, speed, true, undo, redo);
         result = result && requestItemResize(id, size, true, true, undo, redo);
         result = result && getTrackById(tid)->requestClipInsertion(id, pos, true, true, undo, redo);
         if (!result) {