Fix compile warnings

src/timeline2/model/timelinemodel.cpp

@@ -2739,8 +2739,8 @@ int TimelineModel::getNextSnapPos(int pos, std::vector<size_t> &snaps)
     // sort snaps
     std::sort(snaps.begin(), snaps.end());
     for (auto i : snaps) {
-        if (i > pos) {
-            return i;
+        if ((int)i > pos) {
+            return (int) i;
         }
     }
     return pos;
@@ -2774,8 +2774,8 @@ int TimelineModel::getPreviousSnapPos(int pos, std::vector<size_t> &snaps)
     // sort descending
     std::reverse(snaps.begin(),snaps.end());
     for (auto i : snaps) {
-        if (i < pos) {
-            return i;
+        if ((int)i < pos) {
+            return (int)i;
         }
     }
     return 0;

src/timeline2/view/timelinecontroller.cpp

@@ -686,8 +686,8 @@ void TimelineController::gotoNextSnap()
         m_snapStackIndex = pCore->undoIndex();
         m_activeSnaps.clear();
         m_activeSnaps = pCore->projectManager()->current()->getGuideModel()->getSnapPoints();
-        m_activeSnaps.push_back(m_zone.x());
-        m_activeSnaps.push_back(m_zone.y() - 1);
+        m_activeSnaps.push_back((size_t)m_zone.x());
+        m_activeSnaps.push_back((size_t)(m_zone.y() - 1));
     }
     int nextSnap = m_model->getNextSnapPos(pCore->getTimelinePosition(), m_activeSnaps);
     if (nextSnap > pCore->getTimelinePosition()) {
@@ -702,8 +702,8 @@ void TimelineController::gotoPreviousSnap()
             m_snapStackIndex = pCore->undoIndex();
             m_activeSnaps.clear();
             m_activeSnaps = pCore->projectManager()->current()->getGuideModel()->getSnapPoints();
-            m_activeSnaps.push_back(m_zone.x());
-            m_activeSnaps.push_back(m_zone.y() - 1);
+            m_activeSnaps.push_back((size_t)m_zone.x());
+            m_activeSnaps.push_back((size_t)(m_zone.y() - 1));
         }
         setPosition(m_model->getPreviousSnapPos(pCore->getTimelinePosition(), m_activeSnaps));
     }