Part: fix memory leak

m_fileWatcher was never getting deleted.

part/part.cpp

@@ -1036,8 +1036,8 @@ void Part::slotOpenExtractedEntry(KJob *job)
 
         const QString fullName = openJob->validatedFilePath();
         if (isArchiveWritable()) {
-            m_fileWatcher = new QFileSystemWatcher;
-            connect(m_fileWatcher, &QFileSystemWatcher::fileChanged, this, &Part::slotWatchedFileModified);
+            m_fileWatcher.reset(new QFileSystemWatcher);
+            connect(m_fileWatcher.get(), &QFileSystemWatcher::fileChanged, this, &Part::slotWatchedFileModified);
             m_fileWatcher->addPath(fullName);
         } else {
             // If archive is readonly set temporarily extracted file to readonly as

part/part.h

@@ -231,7 +231,7 @@ private:
     KAbstractWidgetJobTracker  *m_jobTracker;
     KParts::StatusBarExtension *m_statusBarExtension;
     QVBoxLayout *m_vlayout;
-    QFileSystemWatcher *m_fileWatcher;
+    std::unique_ptr<QFileSystemWatcher> m_fileWatcher;
     QSplitter *m_commentSplitter;
     QGroupBox *m_commentBox;
     QPlainTextEdit *m_commentView;