shlex.split() tries to read from stdin if passed None

lib/ansible/utils.py

@@ -267,6 +267,7 @@ def parse_yaml_from_file(path):
 def parse_kv(args):
     ''' convert a string of key/value items to a dict '''
     options = {}
+    if not args is None:
         vargs = shlex.split(args, posix=True)
         for x in vargs:
             if x.find("=") != -1: