Zeilenabstand bei lstlistoflistings

\documentclass[a4paper,11pt,oneside,numbers=noendperiod,setspace,parskip=half]{scrbook}
\usepackage[ngerman, english]{babel}
\usepackage{blindtext}
\usepackage[font={small}]{caption}
\usepackage{xcolor}

\setcapindent{0pt}

\usepackage{listings}

%\AtBeginDocument{
 % \counterwithout{lstlisting}{chapter}
%}
\makeatletter
\renewcommand{\l@lstlisting}[2]{\@dottedtocline{1}{0em}{1.5em}{\lstlistingname\ #1}{#2}
}
\renewcommand*{\lstlistlistingname}{List of Code Listings}
\makeatother

\lstset{language=R,
    basicstyle=\small\ttfamily,
    numbers=left,
    numberstyle=\ttfamily\color{gray}\footnotesize,
    breaklines=true,
    deletekeywords={pos,data,predict,grid,file,colnames,glm,family,binomial,link,path,c},
    otherkeywords={!,!=,~,\$,*,\&,\%/\%,\%*\%,\%\%,<-,<<-},
    keywordstyle=\color{blue},
    keywordstyle=[2]{\color{red}},
    commentstyle=\color{gray},
    backgroundcolor=\color{gray!25},
    morekeywords=[2]{arg,pos},
    moredelim=[is][\color{violet}]{''}{''}
}

\begin{document}

    \lstlistoflistings

    \begin{lstlisting}[caption={This is the caption for the code listing}]
% Code comes here
    \end{lstlisting}

\blindtext

    \begin{lstlisting}[caption={This is the caption for the code listing}]
% Code comes here
    \end{lstlisting}

\blindtext

    \begin{lstlisting}[caption={This is the caption for the code listing}]
% Code comes here
    \end{lstlisting}

\end{document}