Default to status checking on PR creation

Author: zeripath

models/pull.go

@@ -516,6 +516,7 @@ func newPullRequestAttempt(repo *Repository, pull *Issue, labelIDs []int64, uuid
 
 	pr.Index = pull.Index
 	pr.BaseRepo = repo
+	pr.Status = PullRequestStatusChecking
 
 	pr.IssueID = pull.ID
 	if _, err = sess.Insert(pr); err != nil {