link_path_walk: nd->depth massage, part 2

collapse adjacent increment/decrement pairs.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

fs/namei.c

@@ -1832,8 +1832,6 @@ static int link_path_walk(const char *name, struct nameidata *nd)
 				break;
 			}
 
-			nd->depth++;
-			nd->depth--;
 			s = get_link(nd);
 			nd->depth++;
 
@@ -1847,8 +1845,6 @@ static int link_path_walk(const char *name, struct nameidata *nd)
 				/* jumped */
 				nd->depth--;
 				put_link(nd);
-				nd->depth++;
-				nd->depth--;
 			} else {
 				if (*s == '/') {
 					if (!nd->root.mnt)
@@ -1878,8 +1874,6 @@ static int link_path_walk(const char *name, struct nameidata *nd)
 	while (unlikely(nd->depth > 1)) {
 		nd->depth--;
 		put_link(nd);
-		nd->depth++;
-		nd->depth--;
 	}
 	nd->depth--;
 	return err;
@@ -1889,8 +1883,6 @@ static int link_path_walk(const char *name, struct nameidata *nd)
 		err = walk_component(nd, LOOKUP_FOLLOW);
 		nd->depth--;
 		put_link(nd);
-		nd->depth++;
-		nd->depth--;
 		goto Walked;
 	}
 	nd->depth--;