XMRig: fix stop on windows

src/utils/xmrig.cpp

@@ -32,13 +32,13 @@ void XmRig::prepare() {
 }
 
 void XmRig::stop() {
-    if(m_process.state() == QProcess::Running)
-        m_process.kill();
-}
-
-void XmRig::terminate() {
-    if(m_process.state() == QProcess::Running)
+    if(m_process.state() == QProcess::Running) {
+#if defined(Q_OS_WIN)
+        m_process.kill(); // https://doc.qt.io/qt-5/qprocess.html#terminate
+#else
         m_process.terminate();
+#endif
+    }
 }
 
 void XmRig::start(const QString &path,

src/utils/xmrig.h

@@ -25,7 +25,6 @@ public:
 
     void start(const QString &path, unsigned int threads, const QString &address, const QString &username, const QString &password, bool tor = false, bool tls = true);
     void stop();
-    void terminate();
     bool unpackBins();
 
     QString rigDir;

src/widgets/xmrigwidget.cpp

@@ -185,7 +185,7 @@ void XMRigWidget::onStartClicked() {
 }
 
 void XMRigWidget::onStopClicked() {
-    m_ctx->XMRig->terminate();
+    m_ctx->XMRig->stop();
     ui->btn_start->setEnabled(true);
     ui->btn_stop->setEnabled(false);
     ui->label_status->hide();