Remove variable branch after function is finished running

src/Evaluator/Evaluator.cpp

@@ -206,6 +206,8 @@ shared_ptr<EvalValue> Evaluator::EvaluateFunctionCallExpression(BoundExpression*
     }
     this->_evaluationScope->OuterScope();
     this->EvaluateBlockStatement(function->GetInnerBlock().get());
+
+    delete this->_evaluationScope;
     this->_evaluationScope = originalScope;
     this->_hasReturned = false;
     auto r = this -> _returnValue;