Fails to build with vala 0.46

[worldofpeace]

../src/DesktopApp.vala:133.28-133.32: error: Invalid assignment from owned expression to unowned variable
            unowned string _path = info.get_string (KeyFileDesktop.KEY_PATH);
                           ^^^^^
../src/DesktopApp.vala:134.17-134.21: error: The name `_path' does not exist in the context of `AppEditor.DesktopApp.get_path'
            if (_path == null) {
                ^^^^^
../src/DesktopApp.vala:135.17-135.21: error: The name `_path' does not exist in the context of `AppEditor.DesktopApp.get_path'
                _path = "";
                ^^^^^
../src/DesktopApp.vala:138.20-138.24: error: The name `_path' does not exist in the context of `AppEditor.DesktopApp.get_path'
            path = _path;
                   ^^^^^

Patches have been used like

• https://build.opensuse.org/package/view_file/openSUSE:Factory/appeditor/appeditor-1.1.0-vala-0.46.patch?expand=1

to fix it quickly.