staging/easycap: fix missing backslash in ifdef statement

the backslash was removed by mistake in the patch
'staging:easycap: drop redundant backslashes from the code'
this breaks compilation only when EASYCAP_NEEDS_ALSA is not set
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/easycap/easycap_ioctl.c

@@ -2519,7 +2519,7 @@ return 0;
 /*****************************************************************************/
 #if !defined(EASYCAP_NEEDS_ALSA)
 /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
-#if ((defined(EASYCAP_IS_VIDEODEV_CLIENT)) ||
+#if ((defined(EASYCAP_IS_VIDEODEV_CLIENT)) || \
 	(defined(EASYCAP_NEEDS_UNLOCKED_IOCTL)))
 long
 easyoss_ioctl_noinode(struct file *file, unsigned int cmd, unsigned long arg) {