Syntax file core dumps mc

[Ian Zagorskih <ianzag megasignal com>]

mc-4.6.1-pre4a

Synopsis:

Looks like mc core dumps when it cannot find "context default" section 
in syntax file.

How to repeat:

Try to open any .conf file with syntax scheme below.

---Syntax---
file ..\*\\.(conf)$ Conf\sFile
include conf.syntax
---Syntax---

---conf.syntax---
context linestart # \n green
        spellcheck
---conf.syntax---

// wbr