[JFFS2] Fix cleanup in case of GC-Task not started

Do not call wait_for_completion, when the gc task is not there. 
Prevent an oops when the gc thread was not started.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2005-05-20 22:37:15 +01:00 committed by Thomas Gleixner
commit e2d48b1a98