Fix comment mappings for commit

AsyncHttpClient/async-http-client@f01d861

Author: tsantalis

src/main/java/gr/uom/java/xmi/diff/UMLCommentListDiff.java

@@ -108,10 +108,14 @@ private void init(List<UMLComment> commentsBefore, List<UMLComment> commentsAfte
 		}
 		groupsBefore.removeAll(groupsBeforeToBeRemoved);
 		groupsAfter.removeAll(groupsAfterToBeRemoved);
-		if(!(allRemainingCommentsBelongToGroups(deletedComments, groupsBefore) && allRemainingCommentsBelongToGroups(addedComments, groupsAfter)) ||
+		boolean allRemainingCommentsBelongToGroups = allRemainingCommentsBelongToGroups(deletedComments, groupsBefore) && allRemainingCommentsBelongToGroups(addedComments, groupsAfter);
+		if(!allRemainingCommentsBelongToGroups ||
 				(groupsBeforeSize <= 1 && groupsAfterSize <= 1)) {
 			processRemainingComments(deletedComments, addedComments);
 		}
+		else if(allRemainingCommentsBelongToGroups && groupsBeforeSize != groupsAfterSize && (groupsBeforeSize <= 1 || groupsAfterSize <= 1)) {
+			processRemainingComments(deletedComments, addedComments);
+		}
 		else {
 			this.deletedComments.addAll(deletedComments);
 			this.addedComments.addAll(addedComments);