Fix things

assets/dash-3d-implementation/undefined-behaviour-it.rs

@@ -1,4 +1,3 @@
-fn func() {
 let mut vec = vec![1, 2, 3];
 let iter = vec.iter();
 loop {
@@ -7,4 +6,3 @@ fn func() {
         None => break,
     }
 }
-}

assets/dash-3d-implementation/undefined-behaviour.rs

@@ -1,6 +1,4 @@
-fn func() {
 let mut vec = vec![1, 2, 3];
 for value in &vec {
     vec.push(value);
 }
-}

src/dash-3d-implementation/introduction.tex

@@ -33,7 +33,7 @@ Consider the piece of C++ code in Listings~\ref{d3i:undefined-behaviour-cpp} and
 
 \begin{figure}[ht]
     \centering
-    \begin{minipage}[c]{0.75\textwidth}
+    \begin{minipage}[c]{0.85\textwidth}
         \lstinputlisting[
             language=c++,
             label={d3i:undefined-behaviour-cpp},