fix: fix polygon remove bug when placing

src/src/Rendering/Measure/MeasureStore.cpp

@@ -47,6 +47,9 @@ void MeasureStore::Remove(Measure *measure) {
 }
 
 void MeasureStore::RemoveAllInSlice(QString SeriesUid, int plane, int slice) {
+    if (!store.contains(SeriesUid))return;
+    if (!store[SeriesUid].contains(plane))return;
+    if (!store[SeriesUid][plane].contains(slice))return;
     for (auto item:(*store[SeriesUid][plane][slice])) {
         item->ForceDelete();
     }