QmlDesigner: Fix macOS build

Unused variable in various cases

Change-Id: I665c037b21446c4ba4eabb1b73ac5a03b22547e2
Reviewed-by: Marco Bubke <marco.bubke@qt.io>

src/plugins/qmldesigner/components/connectioneditor/connectioneditorevaluator.cpp

@@ -1057,7 +1057,7 @@ void ConnectionEditorEvaluator::endVisit([[maybe_unused]] QmlJS::AST::CallExpres
     d->m_acceptLogArgument = false;
 }
 
-void ConnectionEditorEvaluator::endVisit(QmlJS::AST::IfStatement *ifStatement)
+void ConnectionEditorEvaluator::endVisit(QmlJS::AST::IfStatement * /*ifStatement*/)
 {
     if (status() != UnFinished)
         return;
@@ -1070,7 +1070,7 @@ void ConnectionEditorEvaluator::endVisit(QmlJS::AST::IfStatement *ifStatement)
     }
 }
 
-void ConnectionEditorEvaluator::endVisit(QmlJS::AST::StatementList *statementList)
+void ConnectionEditorEvaluator::endVisit(QmlJS::AST::StatementList * /*statementList*/)
 {
     if (status() != UnFinished)
         return;

src/plugins/qmldesigner/components/connectioneditor/connectioneditorstatements.cpp

@@ -316,7 +316,6 @@ MatchedStatement &ConnectionEditorStatements::okStatement(
     ConnectionEditorStatements::Handler &handler)
 {
     MatchedStatement statement;
-    std::visit([statement](auto &test) { return statement; }, handler);
 
     return std::visit(Overload{[](ConnectionEditorStatements::MatchedStatement &var)
                                    -> MatchedStatement & { return var; },

src/plugins/qmldesigner/components/connectioneditor/connectionmodel.cpp

@@ -1425,7 +1425,7 @@ ConditionListModel::ConditionListModel(ConnectionModel *parent)
     : m_connectionModel(parent), m_condition(emptyCondition)
 {}
 
-int ConditionListModel::rowCount(const QModelIndex &parent) const
+int ConditionListModel::rowCount(const QModelIndex & /*parent*/) const
 {
     return m_tokens.size();
 }