[PATCH] fs/compat.c: fix 'if (a |= b )' typo

Mentioned by Mark Armbrust somewhere on Usenet.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/compat.c

@@ -1913,7 +1913,7 @@ asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds,
 	}
 
 	if (sigmask) {
-		if (sigsetsize |= sizeof(compat_sigset_t))
+		if (sigsetsize != sizeof(compat_sigset_t))
 			return -EINVAL;
 		if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
 			return -EFAULT;