Fix that ".." was no longer cleaned in file system locator filter

Amends 66bf957618

Fixes: QTCREATORBUG-26368
Change-Id: I0b90b1a6b6d4bd1bdbf135f0447702d6a85bb9e4
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

src/plugins/coreplugin/locator/filesystemfilter.cpp

@@ -176,8 +176,9 @@ void FileSystemFilter::accept(LocatorFilterEntry selection,
 {
     Q_UNUSED(selectionLength)
     if (selection.filePath.isDir()) {
-        const QString value = shortcutString() + ' '
+        const QString value
-                + selection.filePath.absoluteFilePath().toUserOutput() + '/';
+            = shortcutString() + ' '
+              + selection.filePath.absoluteFilePath().cleanPath().pathAppended("/").toUserOutput();
         *newText = value;
         *selectionStart = value.length();
     } else {