VacuumDialog: Fix dialog after savepoint change

Call saveAll() in the VacuumDialog to make sure to release all savepoints.

Also cancel the dialog when no object was select but the OK button
clicked. This avoids an unnecessary DB reload in the main window.

src/VacuumDialog.cpp

@@ -38,12 +38,12 @@ VacuumDialog::~VacuumDialog()
 void VacuumDialog::accept()
 {
     if(ui->treeSelectedObjects->selectedItems().count() == 0)
-        QDialog::accept();
+        return QDialog::reject();
 
     QApplication::setOverrideCursor(Qt::WaitCursor);
 
     // Commit all changes first
-    db->save();
+    db->saveAll();
 
     // All items selected?
     if(ui->treeSelectedObjects->selectedItems().count() ==  ui->treeSelectedObjects->topLevelItemCount())
@@ -57,7 +57,6 @@ void VacuumDialog::accept()
             db->executeSQL(QString("VACUUM `%1`;").arg(item->text(0)), false);
     }
 
-    db->setDirty(false);
     QApplication::restoreOverrideCursor();
     QDialog::accept();
 }

src/VacuumDialog.h

@@ -12,11 +12,11 @@ class DBBrowserDB;
 class VacuumDialog : public QDialog
 {
     Q_OBJECT
-    
+
 public:
     explicit VacuumDialog(DBBrowserDB* _db, QWidget* parent = 0);
     ~VacuumDialog();
-    
+
 private:
     Ui::VacuumDialog* ui;
     DBBrowserDB* db;