include: Added a missing function declaration.

	init_waitqueue_head(&x->wait);

}

/**

 * reinit_completion - reinitialize a completion structure

 * @x:  pointer to completion structure that is to be reinitialized

 *

 * This inline function should be used to reinitialize a completion structure so it can

 * be reused. This is especially important after complete_all() is used.

 */

static inline void reinit_completion(struct completion *x)

{

	x->done = 0;

}

extern void wait_for_completion(struct completion *);

extern void wait_for_completion_io(struct completion *);

extern int wait_for_completion_interruptible(struct completion *x);