Merge "sdcard: avoid benign unsigned overflow"

am: 64461c2

* commit '64461c293c52289d79b0073307347fb479affb4b':
  sdcard: avoid benign unsigned overflow

Change-Id: Id67f806996c3bef6e7f449c1795e3030edf224b8

sdcard/sdcard.c

@@ -822,7 +822,8 @@ static int handle_forget(struct fuse* fuse, struct fuse_handler* handler,
             hdr->nodeid, node ? node->name : "?");
     if (node) {
         __u64 n = req->nlookup;
-        while (n--) {
+        while (n) {
+            n--;
             release_node_locked(node);
         }
     }