As the following example showes, there are an extra line-feed which is not needed. Is there a way to eliminate?

Example:

```
\documentclass{article}
\usepackage{tikz}

\begin{document}
\def\mylist{str1,str2,str3}

\framebox{
  \parbox{4em}{%
    \foreach \x in \mylist {%
      \makebox[4em][s]{\x}\\%
    }%
  }
}

\end{document}

```

[![enter image description here](https://i.stack.imgur.com/uiZcE.png)](https://i.stack.imgur.com/uiZcE.png)