Qt: Clean up some path canonicalization

CHANGES

@@ -42,6 +42,7 @@ Misc:
  - Libretro: Disable logging game errors, BIOS calls and stubs in release builds
  - ARM7: Support forcing Thumb mode via MSR
  - ARM7: Flush prefetch cache when loading CPSR via MSR
+ - Qt: Canonicalize file paths when loading games
 
 0.4.0: (2016-02-02)
 Features:

src/platform/qt/GameController.cpp

@@ -288,14 +288,12 @@ void GameController::setDebugger(mDebugger* debugger) {
 
 void GameController::loadGame(const QString& path) {
 	closeGame();
-	QFile file(path);
-	if (!file.open(QIODevice::ReadOnly)) {
+	QFileInfo info(path);
+	if (!info.isReadable()) {
 		LOG(QT, ERROR) << tr("Failed to open game file: %1").arg(path);
 		return;
 	}
-	file.close();
-
-	m_fname = path;
+	m_fname = info.canonicalFilePath();
 	openGame();
 }
 
@@ -406,7 +404,12 @@ void GameController::replaceGame(const QString& path) {
 		return;
 	}
 
-	m_fname = path;
+	QFileInfo info(path);
+	if (!info.isReadable()) {
+		LOG(QT, ERROR) << tr("Failed to open game file: %1").arg(path);
+		return;
+	}
+	m_fname = info.canonicalFilePath();
 	threadInterrupt();
 	mCoreLoadFile(m_threadContext.core, m_fname.toLocal8Bit().constData());
 	threadContinue();

src/platform/qt/Window.cpp

@@ -333,11 +333,12 @@ void Window::multiplayerChanged() {
 void Window::selectBIOS() {
 	QString filename = GBAApp::app()->getOpenFileName(this, tr("Select BIOS"));
 	if (!filename.isEmpty()) {
-		m_config->setOption("bios", filename);
+		QFileInfo info(filename);
+		m_config->setOption("bios", info.canonicalFilePath());
 		m_config->updateOption("bios");
 		m_config->setOption("useBios", true);
 		m_config->updateOption("useBios");
-		m_controller->loadBIOS(filename);
+		m_controller->loadBIOS(info.canonicalFilePath());
 	}
 }