added functionality to the cancel buttons of the ButtonBox

both cancel button of add entity and add property has been updated

Author: WanSamuel

src/tiled/mainwindow.cpp

@@ -2290,6 +2290,10 @@ void MainWindow::onCreateEntity()
     CreateObjectLayout->addWidget(CreateObjectName);
     CreateObjectLayout->addWidget(CreateObjectConfirm);
 
+    connect(CreateObjectConfirm, &QDialogButtonBox::rejected, this, [=]{
+        CreateObject->reject();
+    });
+
     if(CurrentLayer && CurrentLayer->layerType() == Layer::ObjectGroupType){
         ObjectGroup *objectGroup = dynamic_cast<ObjectGroup*>(CurrentLayer);
         connect(CreateObjectConfirm, &QDialogButtonBox::accepted, this, [=]{

src/tiled/propertieswidget.cpp

@@ -3149,6 +3149,9 @@ void PropertiesWidget::showAddValueProperty()
             TextureFilePath->setText(AC_TextureFilePath);
         }
     });
+    connect(ButtonBox,&QDialogButtonBox::rejected, this, [=]{
+        PropertyWindow->reject();
+    });
 
     connect(ButtonBox, &QDialogButtonBox::accepted, this, [=]{
         switch(ComponentLayout->currentIndex()){