readline: set null as callback return in case there's no error

The cursor move functions accept a callback. It was possible that
`undefined` was returned in case there was no error instead of null.

PR-URL: https://github.com/nodejs/node/pull/31006
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/readline.js b/lib/readline.js
index d5740942002..255fbe8754a 100644
--- a/lib/readline.js
+++ b/lib/readline.js
@@ -1200,7 +1200,7 @@ function cursorTo(stream, x, y, callback) {
 
   if (stream == null || (typeof x !== 'number' && typeof y !== 'number')) {
     if (typeof callback === 'function')
-      process.nextTick(callback);
+      process.nextTick(callback, null);
     return true;
   }
 
@@ -1221,7 +1221,7 @@ function moveCursor(stream, dx, dy, callback) {
 
   if (stream == null || !(dx || dy)) {
     if (typeof callback === 'function')
-      process.nextTick(callback);
+      process.nextTick(callback, null);
     return true;
   }
 
@@ -1255,7 +1255,7 @@ function clearLine(stream, dir, callback) {
 
   if (stream === null || stream === undefined) {
     if (typeof callback === 'function')
-      process.nextTick(callback);
+      process.nextTick(callback, null);
     return true;
   }
 
@@ -1277,7 +1277,7 @@ function clearScreenDown(stream, callback) {
 
   if (stream === null || stream === undefined) {
     if (typeof callback === 'function')
-      process.nextTick(callback);
+      process.nextTick(callback, null);
     return true;
   }