Possible fix for json-iterator#168 - Always create new instance of col

Author: elifarley

src/main/java/com/jsoniter/ReflectionCollectionDecoder.java

@@ -38,11 +38,7 @@ private Object decode_(JsonIterator iter) throws Exception {
  if (iter.readNull()) {
  return null;
  }
- if (col == null) {
- col = (Collection) this.ctor.newInstance();
- } else {
- col.clear();
- }
+ col = (Collection) this.ctor.newInstance();
  while (iter.readArray()) {
  col.add(compTypeDecoder.decode(iter));
  }