Fix font size on some random slide

Author: younishd

wise1617/slides-03.tex

@@ -219,7 +219,7 @@ \subsection{Verzweigungen}
     \pause
 
     \begin{block}{}
-        \begin{lstlisting}[language=Java]
+        \begin{lstlisting}[language=Java,basicstyle=\scriptsize]
 switch (expression) {
     case constant1:
         instruction1;