PM / Hibernate: Replace unintuitive 'if' condition in kernel/power/user.c with 'else'

In the snapshot_ioctl() function, under SNAPSHOT_FREEZE, the code below
freeze_processes() is a bit unintuitive. Improve it by replacing the
second 'if' condition with an 'else' clause.
Signed-off-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>

kernel/power/user.c

@@ -259,7 +259,7 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
 		error = freeze_processes();
 		if (error)
 			usermodehelper_enable();
-		if (!error)
+		else
 			data->frozen = 1;
 		break;