[DynamicScript] Fix single-shot instances not being properly deleted after finishing.

Author: mpaperno

src/DynamicScript.h

@@ -189,6 +189,17 @@ class DynamicScript : public QObject
 			return !(m_state.setFlag(State::PropertyErrorState, !ok) & State::CriticalErrorState);
 		}
 
+		void setSingleShot(bool ss = true)
+		{
+			if (ss == singleShot)
+				return;
+			singleShot = ss;
+			if (ss)
+				connect(this, &DynamicScript::finished, m_plugin, &Plugin::onDsFinished);
+			else
+				disconnect(this, &DynamicScript::finished, m_plugin, &Plugin::onDsFinished);
+		}
+
 		void resetEngine()
 		{
 			QWriteLocker lock(&m_mutex);

src/Plugin.cpp

@@ -453,6 +453,7 @@ void Plugin::scriptAction(const QByteArray &actId, const QJsonArray &data)
 			break;
 
 		case SA_SingleShot: {
+			ds->setSingleShot();
 			const QString &ityp = dataMap.value("type", QStringLiteral("Expression"));
 			DynamicScript::InputType iType = ityp.isEmpty() || ityp.at(0) == 'E' ? DynamicScript::InputType::Expression : ityp.at(0) == 'S' ? DynamicScript::InputType::Script : DynamicScript::InputType::Module;
 			ds->singleShot = true;