cli: simplify the cli code a bit

alib2cli/src/ast/expression/FunctionCallExpression.h

@@ -16,8 +16,6 @@ public:
 	}
 	std::shared_ptr < abstraction::Value > translateAndEval ( Environment & environment ) const override {
-		std::shared_ptr < abstraction::Value > result;
-
 		ext::vector < std::shared_ptr < abstraction::Value > > params;
 		for ( const std::unique_ptr < Expression > & param : m_params ) {
 			std::shared_ptr < abstraction::Value > value = param->translateAndEval ( environment );

alib2cli/src/ast/expression/ImmediateExpression.h

@@ -12,11 +12,9 @@ public:
 	ImmediateExpression ( Type value ) : m_value ( std::move ( value ) ) {
 	}
-	std::shared_ptr < abstraction::Value > translateAndEval ( Environment & environment ) const override {
+	std::shared_ptr < abstraction::Value > translateAndEval ( Environment & ) const override {
 		Type copy = m_value;
-		std::shared_ptr < abstraction::ValueHolder < Type > > value = std::make_shared < abstraction::ValueHolder < Type > > ( std::move ( copy ), true );
-		environment.holdTemporary ( value );
-		return value;
+		return std::make_shared < abstraction::ValueHolder < Type > > ( std::move ( copy ), true );
 	}
 };