Fixed to check only merge request with state "closed" or "open". Moved state...

Fixed to check only merge request with state "closed" or "open". Moved state parse to GitlabMergeRequest model.

src/main/java/org/gitlab/api/GitlabAPI.java

@@ -104,11 +104,9 @@ public class GitlabAPI {
         List<GitlabMergeRequest> openMergeRequests = new ArrayList<GitlabMergeRequest>();
 
         for (GitlabMergeRequest mergeRequest : allMergeRequests) {
-            boolean closedState = (mergeRequest.getState() != null && mergeRequest.getState().equals("closed"));
-            if (closedState || mergeRequest.isClosed()) {
+            if (mergeRequest.isMerged() || mergeRequest.isClosed()) {
                 continue;
             }
-
             openMergeRequests.add(mergeRequest);
         }
 

src/main/java/org/gitlab/api/models/GitlabMergeRequest.java

@@ -100,5 +100,9 @@ public class GitlabMergeRequest {
 
     public void setState(String state) {
         _state = state;
+        if(state != null) {
+            _closed = state.equals("closed");
+            _merged = state.equals("merged");
+        }
     }
 }