Fixed serialization of t-distance

Change-Id: I411054200c13fa930e1cee795fb8e10e29f1a20e
diff --git a/src/main/java/de/ids_mannheim/korap/query/spans/CandidateSpanComparator.java b/src/main/java/de/ids_mannheim/korap/query/spans/CandidateSpanComparator.java
index 0ba3c29..c351891 100644
--- a/src/main/java/de/ids_mannheim/korap/query/spans/CandidateSpanComparator.java
+++ b/src/main/java/de/ids_mannheim/korap/query/spans/CandidateSpanComparator.java
@@ -5,10 +5,11 @@
 public class CandidateSpanComparator implements Comparator<CandidateSpan> {
 
     @Override
-    public int compare(CandidateSpan o1, CandidateSpan o2) {
+    public int compare (CandidateSpan o1, CandidateSpan o2) {
         if (o1.doc == o2.doc) {
             if (o1.getStart() == o2.getStart()) {
-                if (o1.getEnd() == o2.getEnd()) return 0;
+                if (o1.getEnd() == o2.getEnd())
+                    return 0;
                 if (o1.getEnd() > o2.getEnd())
                     return 1;
                 else