AutoTest: Correctly release resources

Change-Id: I8023c1468f9cf9cc0c549a466b298e19a6b40a15
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>

src/plugins/autotest/qtest/qttestparser.cpp

@@ -241,6 +241,12 @@ void QtTestParser::init(const QStringList &filesToParse)
     CppParser::init(filesToParse);
 }
 
+void QtTestParser::release()
+{
+    m_testCaseNames.clear();
+    CppParser::release();
+}
+
 bool QtTestParser::processDocument(QFutureInterface<TestParseResultPtr> futureInterface,
                                    const QString &fileName)
 {

src/plugins/autotest/qtest/qttestparser.h

@@ -41,6 +41,7 @@ class QtTestParser : public CppParser
 {
 public:
     void init(const QStringList &filesToParse) override;
+    void release() override;
     bool processDocument(QFutureInterface<TestParseResultPtr> futureInterface,
                          const QString &fileName) override;
 

src/plugins/autotest/quick/quicktestparser.cpp

@@ -224,6 +224,13 @@ void QuickTestParser::init(const QStringList &filesToParse)
     CppParser::init(filesToParse);
 }
 
+void QuickTestParser::release()
+{
+    m_qmlSnapshot = QmlJS::Snapshot();
+    m_proFilesForQmlFiles.clear();
+    CppParser::release();
+}
+
 bool QuickTestParser::processDocument(QFutureInterface<TestParseResultPtr> futureInterface,
                                       const QString &fileName)
 {

src/plugins/autotest/quick/quicktestparser.h

@@ -43,6 +43,7 @@ class QuickTestParser : public CppParser
 {
 public:
     void init(const QStringList &filesToParse) override;
+    void release() override;
     bool processDocument(QFutureInterface<TestParseResultPtr> futureInterface,
                          const QString &fileName) override;
 private: