fix: cleanupRequests for all outstanding sftp._requests

Author: jeffrson

lib/protocol/SFTP.js

@@ -2721,17 +2721,18 @@ function doFatalSFTPError(sftp, msg, noDebug) {
 }
 
 function cleanupRequests(sftp) {
-  const keys = Object.keys(sftp._requests);
-  if (keys.length === 0)
-    return;
-
-  const reqs = sftp._requests;
-  sftp._requests = {};
   const err = new Error('No response from server');
-  for (let i = 0; i < keys.length; ++i) {
-    const req = reqs[keys[i]];
-    if (typeof req.cb === 'function')
-      req.cb(err);
+  while (true) {
+    const keys = Object.keys(sftp._requests);
+    if (keys.length === 0)
+      return;
+    const reqs = sftp._requests;
+    sftp._requests = {};
+    for (let i = 0; i < keys.length; ++i) {
+      const req = reqs[keys[i]];
+      if (typeof req.cb === 'function')
+        req.cb(err);
+    }
   }
 }