Use make_intrusive/make_shared for smart pointer construction.

src/gui/value/choice.cpp

@@ -203,9 +203,9 @@ void DropDownChoiceListBase::generateThumbnailImages() {
         status = THUMB_OK; // no need to rebuild
       } else if (img.isReady()) {
         // request this thumbnail
-        thumbnail_thread.request( intrusive(new ChoiceThumbnailRequest(
+        thumbnail_thread.request(make_intrusive<ChoiceThumbnailRequest>(
             &cve, i, status == THUMB_NOT_MADE && !img.local(), img.threadSafe()
-          )));
+          ));
       }
     }
   }

src/gui/value/package_choice.cpp

@@ -116,5 +116,5 @@ void PackageChoiceValueEditor::change(const String& c) {
 
 void PackageChoiceValueEditor::initDropDown() {
   if (drop_down) return;
-  drop_down = shared(new DropDownPackageChoiceList(&editor(), this));
+  drop_down = make_shared<DropDownPackageChoiceList>(&editor(), this);
 }

src/gui/value/text.cpp

@@ -1367,7 +1367,7 @@ void TextValueEditor::findWordLists() {
       throw Error(_ERROR_1_("word list type not found", name));
     }
     // add to word_lists
-    word_lists.push_back(intrusive(new WordListPos(pos, end, word_list)));
+    word_lists.push_back(make_intrusive<WordListPos>(pos, end, word_list));
     // next
     pos = str.find(_("<word-list-"), end);
   }