Merge pull request #3175 from jpmens/setup9

Protect None value in setup module (ansible 1.2)

library/system/setup

@@ -619,6 +619,7 @@ class LinuxHardware(Hardware):
             d['rotational'] = get_file_content(sysdir + "/queue/rotational")
             d['scheduler_mode'] = ""
             scheduler = get_file_content(sysdir + "/queue/scheduler")
+            if scheduler is not None:
                 m = re.match(".*?(\[(.*)\])", scheduler)
                 if m:
                     d['scheduler_mode'] = m.group(2)