bail out if open dependency found

src/patchbot.py

@@ -389,8 +389,15 @@ def test_a_ticket(self, ticket=None):
             print "No more tickets."
             time.sleep(self.config['idle'])
             return
-
         rating, ticket = ticket
+        if len(ticket['depends_on']) > 0:
+            for dep_id in ticket['depends_on']:
+                time.sleep(1)
+                dep = self.lookup_ticket(dep_id)
+                if dep['status'] <> 'closed' and dep['status'] <> 'unknown':
+                    print "Ticket has open dependency. Ignoring..."
+                    return
+
         print "\n" * 2
         print "=" * 30, ticket['id'], "=" * 30
         print ticket['title']