Fix close_pull_requests from jeepyb

Adding a 'try' to handle errors when the repo or organization is
not found in github.

Change-Id: Ib86f848cfa0babd9091cc9610ae973b0d00758b6

jeepyb/cmd/close_pull_requests.py

@@ -84,11 +84,18 @@ def main():
 
         # Find the project's repo
         project_split = project.split('/', 1)
+
+        # Handle errors in case the repo or the organization doesn't exists
+        try:
             if len(project_split) > 1:
                 org = orgs_dict[project_split[0].lower()]
                 repo = org.get_repo(project_split[1])
             else:
                 repo = ghub.get_user().get_repo(project)
+        except KeyError:
+            continue
+        except github.GithubException:
+            continue
 
         # Close each pull request
         pull_requests = repo.get_pulls("open")