code can be undefined

9 years ago · 50e0c4f4d0
parent 81a428267f
commit 50e0c4f4d0
1 changed files with 1 additions and 1 deletions
--- a/index.js
+++ b/index.js
@ -96,7 +96,7 @@ exports.unmount = function (mnt, cb) {
 }
 exports.errno = function (code) {
-  return exports[code.toUpperCase()] || -1
+  return (code && exports[code.toUpperCase()]) || -1
 }
 exports.EPERM = -1