Qt: Fix memory leak in library

src/platform/qt/library/LibraryController.cpp

@@ -1,4 +1,5 @@
 /* Copyright (c) 2014-2017 waddlesplash
+ * Copyright (c) 2014-2020 Jeffrey Pfau
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -10,7 +11,7 @@
 #include "LibraryGrid.h"
 #include "LibraryTree.h"
 
-namespace QGBA {
+using namespace QGBA;
 
 LibraryEntry::LibraryEntry(mLibraryEntry* entry)
 	: entry(entry)
@@ -57,6 +58,7 @@ LibraryController::LibraryController(QWidget* parent, const QString& path, Confi
 }
 
 LibraryController::~LibraryController() {
+	freeLibrary();
 	mLibraryListingDeinit(&m_listing);
 }
 
@@ -134,7 +136,7 @@ void LibraryController::refresh() {
 	QStringList allEntries;
 	QList<LibraryEntryRef> newEntries;
 
-	mLibraryListingClear(&m_listing);
+	freeLibrary();
 	mLibraryGetEntries(m_library.get(), &m_listing, 0, 0, nullptr);
 	for (size_t i = 0; i < mLibraryListingSize(&m_listing); i++) {
 		mLibraryEntry* entry = mLibraryListingGetPointer(&m_listing, i);
@@ -185,4 +187,9 @@ void LibraryController::loadDirectory(const QString& dir) {
 	mLibraryLoadDirectory(library.get(), dir.toUtf8().constData());
 }
 
-}
+void LibraryController::freeLibrary() {
+	for (size_t i = 0; i < mLibraryListingSize(&m_listing); ++i) {
+		mLibraryEntryFree(mLibraryListingGetPointer(&m_listing, i));
+	}
+	mLibraryListingClear(&m_listing);
+}

src/platform/qt/library/LibraryController.h

@@ -1,4 +1,5 @@
 /* Copyright (c) 2014-2017 waddlesplash
+ * Copyright (c) 2014-2020 Jeffrey Pfau
  *
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -97,6 +98,7 @@ private slots:
 
 private:
 	void loadDirectory(const QString&); // Called on separate thread
+	void freeLibrary();
 
 	ConfigController* m_config = nullptr;
 	std::shared_ptr<mLibrary> m_library;