Rewrite function for resolving competitor name

app/src/main/java/ch/nuth/zhaw/exbox/MyCompetitor.java

@@ -63,7 +63,7 @@ public class MyCompetitor implements Comparable<MyCompetitor> {
     @Override
     public int hashCode() {
         int hashCode = 13;
-        hashCode += name.hashCode();
+        hashCode += getName().hashCode();
         hashCode *= 17;
         return hashCode + rank;
     }