Close file before returning

awxkit/awxkit/yaml_file.py

@@ -89,7 +89,7 @@ def load_file(filename):
         path = local(filename)
 
     if path.check():
-        fp = path.open()
+        with open(path, 'r') as fp:
             # FIXME - support load_all()
             return yaml.load(fp, Loader=Loader)
     else: