[JFFS2] Invert last argument of jffs2_gc_fetch_inode(), make it boolean.

We don't actually care about nlink; we only care whether the inode in
question is unlinked or not.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index bad0056..d4db0ef 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -401,7 +401,7 @@
 	nlink = ic->nlink;
 	spin_unlock(&c->inocache_lock);
 
-	f = jffs2_gc_fetch_inode(c, inum, nlink);
+	f = jffs2_gc_fetch_inode(c, inum, !nlink);
 	if (IS_ERR(f)) {
 		ret = PTR_ERR(f);
 		goto release_sem;