TBR: devtools/madb: fix crash when setting a nickname for the first time.

Change-Id: I105b7742f8dafacbbafed2db8e6297f44c01c2b3
diff --git a/name.go b/name.go
index 1957629..b26251c 100644
--- a/name.go
+++ b/name.go
@@ -226,7 +226,7 @@
 	if err != nil {
 		// Nickname file may not exist when there are no nicknames assigned, and it is not an error.
 		if os.IsNotExist(err) {
-			return nil, nil
+			return result, nil
 		}
 
 		return nil, err