fix warning

Change-Id: I36ef0823a7e0b786b1315df4e3d48fabb99c16f4
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

src/plugins/qmldesigner/components/formeditor/formeditoritem.cpp

@@ -1087,7 +1087,7 @@ static int counterClockWise(const std::vector<QPointF> &points)
     };
 
     const int m = findLR(points);
-    const int n = points.size();
+    const int n = static_cast<int>(points.size());
 
     // Determine previous and next point to m (the lowest, rightmost point).
     const QPointF a = points[(m + (n - 1)) % n];

src/plugins/qmldesigner/components/itemlibrary/itemlibraryassetimporter.cpp

@@ -89,7 +89,7 @@ void ItemLibraryAssetImporter::importQuick3D(const QStringList &inputFiles,
         if (m_qmlPuppetProcesses.empty()) {
             finalizeQuick3DImport();
         } else {
-            m_qmlPuppetCount = m_qmlPuppetProcesses.size();
+            m_qmlPuppetCount = static_cast<int>(m_qmlPuppetProcesses.size());
             const QString progressTitle = tr("Generating icons.");
             addInfo(progressTitle);
             notifyProgress(0, progressTitle);