staging/easycap: fix artificial line breaks

fix style issue:
		if (NULL !=
				pdata_urb->purb) {
created by the patch:
	'staging/easycap: don't cast NULL pointer'

After dropping the casting there is no longer 80 columns
limitation

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>