CppcheckRunner: Connect to done() signal instead of finished()

Simplify internals a bit.

Change-Id: I4871b73f605af4d56e4993b6d71bbb22b4fce27d
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/cppcheck/cppcheckrunner.h

@@ -26,12 +26,11 @@
 #pragma once
 
 #include <utils/filepath.h>
+#include <utils/qtcprocess.h>
 
 #include <QHash>
 #include <QTimer>
 
-namespace Utils { class QtcProcess; }
-
 namespace Cppcheck {
 namespace Internal {
 
@@ -58,18 +57,16 @@ private:
     void checkQueued();
     void readOutput();
     void readError();
-    void handleStarted();
-    void handleFinished();
+    void handleDone();
 
     CppcheckTool &m_tool;
-    Utils::QtcProcess *m_process = nullptr;
+    Utils::QtcProcess m_process;
     Utils::FilePath m_binary;
     QString m_arguments;
     QHash<QString, Utils::FilePaths> m_queue;
     Utils::FilePaths m_currentFiles;
     QTimer m_queueTimer;
     int m_maxArgumentsLength = 32767;
-    bool m_isRunning = false;
 };
 
 } // namespace Internal